Amid Mariah Carey's heartbreaking announcement that her mother Patricia and sister Alison died on the same day over the weekend, Dailymail.com is taking a closer look at Alison's life.

Carey, 55, told People in a statement Monday, 'My heart is broken that I've lost my mother this past weekend. Sadly, in a tragic turn of events, my sister lost her life on the same day.'

Alison was 63 when she died while Patricia was 87, according to the outlet, which noted their respective causes of death were not immediately clear.

Mariah said she felt 'blessed' she was able to 'spend the last week' with her mother prior to her passing.

She added, 'I appreciate everyone's love and support and respect for my privacy during this impossible time.'

Relationship with Mariah

Alison was the older sister to Mariah, and the middle child of the late Patricia and opera singer Alfred Carey (who died at 72 in 2002). The former couple, also parents to son Morgan Carey, 64, had been wed from 1960-1973, splitting when Mariah was three-years-old.

Mariah said in her 2020 memoir The Meaning of Mariah Carey that after extensive therapy, she decided to cease contact with both Alison and Morgan.

'For my sanity and peace of mind, my therapist encouraged me to literally rename and reframe my family ... Morgan my ex-brother and Alison my ex-sister ... I had to stop expecting them to one day miraculously become the ... big brother and big sister I fantasized about,' she wrote.

Mariah added: 'I had to stop making myself available to be hurt by them. It has been helpful. I have no doubt it is emotionally and physically safer for me not to have any contact with my ex-brother and ex-sister.'

In the book, Mariah claimed that Alison tried to get her to use drugs and had 'inflicted [her] with third-degree burns' when she was a pre-teen, impacting her lifelong development.

'When I was 12 years old, my sister drugged me with Valium, offered me a pinky nail full of cocaine ... and tried to sell me out to a pimp,' Mariah said. 'Something in me was arrested by all that trauma. That is why I often say, "I'm eternally 12." I am still struggling through that time.'

In a September 2020 interview with Oprah Winfrey, Mariah described Alison as 'troubled and traumatized' amid their upbringing.

The Someday singer recalled: 'We don't even really know each other, and that's the thing. We didn't grow up together, but we did. Like, they were on their journeys, by the time I got into the world, they had already been damaged, in my opinion.

'But again, I wasn't there. I was dropped into this world and I literally felt like an outsider amongst my own family.'

According to a 2015 New York Post report, Alison was mother to four children, pregnant for the first time at the age of 15, and having another child in 1988. She had two more children by 2002, the paper reported.

Legal action against Mariah

In the wake of the release of the book in September of 2020, Alison filed a $1.25 million lawsuit against the Grammy-winning artist in 2021.

Alison in legal docs denied 'outrageous claims' made in a chapter titled Dandelion Tea, in which Mariah alleged that a 20-year-old Alison had sought to sell her to a pimp at the age of 12, noting that the singer provided no evidence to back up the shocking claim, ET reported.

Alison said in legal docs that Mariah 'used her status as a public figure to attack her penniless sister, generating sensational headlines describing her lurid claims to promote sales of her book.'

Alison said said that the 'cruel and outrageous allegations' made by Mariah in the book left her 'devastated' amid a number of other unfortunate circumstances in her life.

Alison said she had was 'already struggling with the unspeakable trauma of her childhood and having her own children abandon her' prior to the publication of the memoir.

Alison said she had 'become severely depressed and uncharacteristically tearful since the publication of [Mariah's] book and now struggles, after a long time clean, with alcohol abuse.'

She said that she wanted the $1.25 million sum as 'compensation for the infliction of immense emotional distress caused by defendant's heartless, vicious, vindictive, despicable and totally unnecessary public humiliation.'

Battles with health

Alison had been living with HIV since 1990, as the New York Post reported in 2005 that she had been HIV-positive 'for at least 15 years.'

Alison said in her 2021 suit that she had been living with a brain injury following a violent home invasion she was the victim of in 2015. 

She said that the incident impacted her vision and short-term memory.

In a video that circulated last autumn, Alison said that she had lost all of her teeth and was unable to afford any dental restoration treatments.

'I'm Alison Carey, unfortunately I'm living without teeth,' Alison said in November, The Mirror reported. 'I haven't been able to replace them. I wish I could replace them but I just don't have the money, so this is where I stand.

'It's almost impossible to get things done without teeth. That's all I really have to say.'

Legal problems & addiction battle

Alison had been arrested multiple times in connection with accusations of prostitution over the years.

Alison had engaged in prostitution 'off and on since the early 1980s' in an effort 'to fund her longtime drug addiction,' sources said in the 2005 report from the Post.

Alison had been arrested twice in a 10-week span, including a June 13, 2015 incident in which she was taken into custody in Suffolk County, New York after soliciting an undercover cop at a boat marina, according to the Post.

Alison was arrested again in August of 2016 in upstate New York in connection with prostitution, authorities told The Daily Freeman.

In the incident, police told the paper that Alison had been seeking to solicit money in exchange for sexual acts from an undercover police officer during a probe at a hotel.

Alison was described by law enforcement as a 'transient' who had been advertising sexual acts online, and told arresting officers that she was Mariah Carey's sister.

In one of her online ads, The Daily Freeman reported, Alison referenced lyrics from Mariah's 1995 single Fantasy.

The ad read, 'Im a pretty lady looking for guys who are looking to have some fun and get into a world of pleasure that other woman just cant provide two you, woman with the ability to make the earth move for you and to get you to see stars. Oh yea with me its, "ITS SUCH A SWEET, SWEET FANTASY BABY, WHEN I CLOSE MY EYES I COME AND TAKE YOU ON AND ON."'

Mariah's past reconciliation attempts

A source told the Post in June 2005 that Alison had 'been in rehab at least 10 times – many times financed by Mariah.'

While 'Mariah isn’t one to give up on people,' she was 'having to learn that you can’t help someone who doesn’t want to be helped,' an insider said in the report.

One source told the outlet that 'Mariah, especially, wanted a reconciliation' with her older sister in 2002 after their father's death.

'She thought it was important to try and have something good come out of an awful situation,' an insider told the outlet.

Following their father's passing, Alison inherited $1 million, but was not financially prudent with the money.

'When she got the money, she would spend a week and a half living at the St. Regis, racking up $15,000 tabs,' a family insider told the outlet. 'It was very painful for the entire family to see her burn through what Alfred had worked his whole life for. He had wanted Alison to be taken care of.'

Alison returned to prostitution 'around the time the money ran out,' a source told the outlet.

In March of 2016, Alison filmed a video published by Dailymail.com in which she appealed to her famed sibling for financial assistance after the 2015 attack that left her injured.

She said, 'Mariah, I love you. I desperately need your help. Please don’t abandon me like this.'