Bobby Brown is "worried" his daughter Bobbi Kristina might do "something stupid," according to reports.

The 18-year-old is naturally devastated after the death of her mother Whitney Houston but Bobby is concerned with the way she is handling her grief.

He apparently wants her to enter a rehab facility straight away to seek help rather than turning to more destructive methods.

"Bobby told family friends that he's really worried about Bobbi Kristina," a source told RadarOnline.

"He knows that she is devastated about her mother dying and he doesn't think that she is handling it well at all.

"Bobby is afraid of what is going to happen to Krissy if she doesn't get some help the last thing he wants is for another tragedy."

There have been reports that Bobbi Kristina had to enter a treatment facility last year but the family's rep would not confirm this.

"Krissy has taken her mother's death really hard, not surprisingly, and Bobby is terrified she's going to do something stupid," the insider added.

"He wants her in a treatment centre, getting professional help to get her through the grieving process without falling back on alcohol or drugs to mask her pain."

Bobbi Kristina apparently went to "get high" after the four-hour funeral service to honour her mother on Saturday and had her relatives worried sick.

"Let's face it, both her parents struggled with dependency issues and Bobby knows that addiction often runs in the genes," the source said. "So he's terrified his daughter is going to follow in his and Whitney's footsteps he wants to stop that by all means possible."