The popular Irish journalist, best known for her time at UTV, passed away following a terminal illness – just days after asking her fans to “say prayers for me”.
Aideen told her 16,600 Twitter followers on Tuesday that she had been unwell in hospital.
Sharing photos of her receiving a blood transfusion, she wrote: “Day 19 in hospital – say a wee prayer for me. Bleeding in stomach.”
Then three days later, she revealed she was “going home to die” as the treatment had not gone as hoped.
“So life has not gone well and I am as sick as I was as when I went in to hospital so essentially going home to die but getting palliative care,” she added.
“The kids know. If you ever come across them, will you an eye out for them, they are the kindest, sweetest most thoughtful kiddies.”
Exactly what Aideen was suffering from has not been disclosed.
She was flooded with messages from well-wishers after making the announcement, and tributes have poured in since her death.
Her former UTV colleague Rita Fitzgerald said: “Darling Aideen, I’m so desperately sorry to hear this. My heart is breaking for you.”
Close pal Emma Little-Pengally, who confirmed Aideen’s death last night, wrote: “Absolutely devastated. My beautiful, funny, kind friend Aideen has passed away.
“I will miss her terribly. We met 22 years ago when we shared a room for the summer in DC and became firm friends.
“Goodbye beautiful girl.”
She later added: “Our time here on Earth is done. I grieve for that.
“No more pain, or illness for you now. No more sorrow or trauma.
“The most beautiful, kind soul that life gave me the privilege of knowing. Our walks and talks, craic and fun.
“I hope we will meet again. Goodbye my friend.”
In an interview with the Belfast Telegraph in 2018 Ms Kennedy spoke about how her parents had already lost three of their four children.
The mother of two said her brother Dara, who had a brain tumour, died in 2016 and her sister Fiona died the same year after being diagnosed with cancer.
Another brother Rory was killed as a toddler in a road accident.
Aideen is survived by her children Jacob and Eva, and her parents Noel and Maura.