Bobbi Kristina Brown reportedly "doesn't want anyone's help" following the death of her mother Whitney Houston.

The 19-year-old daughter of the iconic singer was hospitalised for stress after Whitney passed away February 11.

Bobbi Kristina is thought to be faring poorly with her grief over Whitney's demise.

"Bobbi just doesn't want anyone's help," a source revealed to Us Weekly magazine. "She's lost."

Deeply impacted by sorrow, Bobbi Kristina was said to have accepted an engagement to wed her "adopted brother" 22-year-old Nick Gordon earlier this month.

Bobbi Kristina's father singer Bobby Brown was also arrested and subsequently released from jail for driving under the influence this week.

Bobbi Kristina's loved ones are deeply concerned for her well-being at this time.

"Everyone is worried about Bobbi," the source said.

Representatives have denied that Bobbi Kristina and Nick are romantically involved.

Bobbi Kristina's relationship with her dad Bobby is thought to be strained.

Bobby was released from a California jail Monday after posting $5,000 bail on DUI charges.

Authorities revealed last Thursday that Whitney officially died of drowning, but a sustained use of cocaine also contributed to her death.