Bobbi Kristina's aunt, Leolah Brown, claims Nick Gordon is responsible for Bobbi Kristina's dire medical state, and she blames someone else ... Pat Houston.
Leolah has harsh words for Nick, claiming she has knowledge of what he did to his girlfriend and calling him "guilty."
But Leolah 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.
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