Bobbi Kristina Brown's cousin: Doctors 'don't see any hope'

Aug. 16, 2012. Bobbi Kristina Brown attends the Los Angeles premiere of "Sparkle" at Grauman's Chinese Theatre in Los Angeles. (The Associated Press)

Bobbi Kristina Brown’s family isn’t giving up hope, even if doctors may be.

Her cousin Jerod Brown posted a short note to his Facebook page on Thursday asking fans to continue pray for the 21-year-old, who reportedly is “brain-dead” after being found face down in a bathtub on Saturday.

‘Hey y’all, a few of you have been messaging me, commenting under photos about her condition… Though it seems the odds are against her, though doctors don’t see any hope for change, though we might want to play detective and find out how she got there, thought it looks impossible for her stand again STILL PRAY FOR BK #StillPrayForBK Campaign stars NOW!” read the short note attached to a beaming photo of Brown.’

As new details unfold, E! News has learned that the daughter of Whitney Houston and Bobby Brown could have been submerged for 15 to 30 minutes before being found by friend Max Lomas, who began CPR. “He was just a guy doing the best he could to get help for his friend,” Lomas’ attorney said.

“It’s now a matter of when the family wants to let go and accept that she’s pretty much not going to make it,” a source close to the family told Fox 411 earlier this week.

Wednesday marks the third anniversary of Houston’s death. The late music industry veteran’s body was found in a bathtub at the Beverly Hilton Hotel. She was 48.

This article originally appeared in The New York Post.