Bobbi Kristina 's aunt, Leola Brown, claims Nick Gordon is responsible for Bobbi Kristina's dire medical state, and she blames someone else ... Pat Houston .
Leola has harsh words for Nick, claiming she has knowledge of what he did to his girlfriend and calling him "guilty."
But Leola rails on Pat, saying she's a phony whom Whitney never liked, and she forced a fragile Bobbi Kristina to do a reality show on the heels of her mom's death, which emotionally wrecked her.
Watch the video ... it leaves no doubt of family warfare.
