The 21 year old was found unresponsive and face down in a bathtub at the Roswell, Georgia home she shares with partner Nick Gordon at the weekend (31Jan15) and she has been hospitalised ever since.
A doctor has reportedly told her father Bobby Brown and members of the Houston family there's nothing more he and his team can do for Bobbi Kristina, and a source tells People.com, "Everyone is coming to the hospital to say goodbye."
Her father, who turned 46 on Thursday (05Feb15), is said to be devastated as he makes the decision whether or not to take his only child from his marriage to Whitney Houston off life support.
The family source adds, "Bobby has been crying non-stop since yesterday."
Another insider tells the publication, "It's sinking in that this is it, but we're all still praying that God will intervene and heal her body."
The latest news comes just a week before the third anniversary of Whitney's death - the superstar drowned in a bathtub at a Beverly Hills hotel on 12 February, 2012. Her passing was drug related.
Meanwhile, there may be a little good news in amongst all the tragedy for Brown - Tmz.com is reporting his wife, Alicia Etheredge, is four months pregnant.
Etheredge was spotted arriving at Emory University Hospital with the grieving father on Wednesday (04Feb15).