AUDREY Fitzpatrick arrived at the scene where her only son was murdered carrying a bouquet of flowers.
Attached was a Mass card for her son, who she described as, "My Chicken".
She signed the card: "Your loving Ma," and wrote, "love, xxxxxx."
She was comforted by her brother, Paul Donohoe, at the busy north Dublin traffic intersection where her son died.
Tragically, it is the second child she has lost; her daughter Amy vanished without a trace while the family were living in Spain in 2008.
Once she set down the flowers with the growing pile of tributes to her 23-year-old son, she and her brother went through the glass doors of the apartment building.
Hand prints on the door where forensic gardai had been dusting for prints were still clearly visible.
It is understood that Ms Fitzpatrick had been sharing an apartment in the Burnell Square building with her partner, Dave Mahon.
He was arrested in connection with the incident where Dean was killed, but released without charge.
She previously told the Irish Independent that she wasn't in the apartment on Saturday night and knew nothing about the events leading up to her son's death from a single stab wound.
She declined to be interviewed about the killing when she emerged from the building after about 20 minutes.
Visibly upset, the grieving mother was driven away by her brother.
She hadn't been the only visitor to the spot where Dean was killed.
A poignant message was left by his girlfriend Sara, the mother of their infant son Leon.
She wrote: "Dean + Dad, we love you and we miss you.
"You were taken away too soon from us. We will never forget you. Love from your partner Sara and your baby son Leon xxxxxxxxx"