Bobbi Kristina — Situation Bleak

EXCLUSIVE

Whitney Houston‘s daughter Bobbi Kristina has “significantly diminished” brain function and doctors have told her family it does not look good … this according to sources connected with the family.

As we previously reported, the 21-year-ancient was found face down in her bathtub Saturday and not breathing.  She was revived, taken to the hospital where she was positioned in a medically-induced coma.

She is…