Whitney Houston's Daughter Bobbi Kristina -- Family Wants Rehab ASAP

Whitney Houston's family wants Bobbi Kristina to enter a live-in rehab facility ASAP -- but sources tell TMZ, they're holding off on telling her until after Whitney's funeral today.

According to sources connected with the family, Bobbi has struggled with substance abuse issues for the last three or four years -- and the family wants her to seek out professional help at a 60-day live-in treatment facility before her problems get worse.

We're told the family is aware Whitney fell off the wagon in the weeks leading to her death -- and they don't want the same fate to befall her daughter.

But they're not putting pressure on her to enter rehab right away -- they want to give her time to grieve during and immediately after her mother's funeral today.