An eyewitness has claimed that Bobbi Kristina Brown’s eyes were “glassy” and she appeared to be “wasted” during Whitney Houston’s burial.

According to RadarOnline.com, Bobbi Kristina Brown almost didn’t make it to the cemetery on Sunday.

“Bobbi Kristina didn’t want to be at the burial, and she looked wasted,” a source close to the situation told RadarOnline.com.

“Krissy’s eyes were glassy, and she seemed to be very disconnected from the service. Krissy hasn’t been eating or sleeping and just can’t stand to be around her family right now. Krissy’s group of friends appear to be much older, and don’t seem to have her best interests at heart.”

Bobbi Kristina was hospitalized at Cedars-Sinai Medical Center before and after her mother was found dead in a bathtub at the Beverly Hilton hotel on February 11.

“Krissy has taken her mother’s death really hard, not surprisingly, and Bobby is terrified she’s going to do something stupid. He wants her in a treatment center, getting professional help to get her through the grieving process without falling back on alcohol or drugs to mask her pain,” an insider told Radar Online.

“The true cause for concern is that the Houstons feel absolutely powerless to do anything about Krissy because she is an adult and they are afraid to push her too hard for fear of driving her away.”

“Krissy’s Aunt Pat [Whitney Houston’s sister-in-law], who spoke at the service on Saturday, is truly frightened of the toll all of this is going to take on Cissy, who is also taking her daughter’s death extremely hard.

“Pat seems to be the only one who isn’t afraid to get in Krissy’s face and physically haul her to rehab, but they know if they take her unwillingly, she will bolt.”

An eyewitness has claimed that Bobbi Kristina Brown's eyes were “glassy” and she appeared to be “wasted” during Whitney Houston’s burial

The Daily Beast originally reported that Bobbi Kristina Brown had vanished following the four-hour service in Newark, New Jersey. A report on Sunday claimed the mourning teenager was later found “getting high” by concerned family members.

It also claimed there were conflicts between family members on whether Bobbi Kristina should be taken to rehab straight away or left to mourn with them. Darlene Love, Whitney Houston’s godmother, told Access Hollywood that Bobbi Kristina was with the family the whole time and they are keeping a close-eye on her.

“She was with us and she was with the family the whole time… She’s been with the family these last couple of days. We all know where she is, she’s not missing.”

Darlene Love’s denial appears to contradict a family statement on Sunday, conceding the teen had some time out.

A family spokesperson told The Daily Beast: “There was some confusion about Bobbi Kristina’s whereabouts last night for a short time, but she’s OK. She needed some time alone.”

The Houston family rep denied that Bobbi Kristina was on drugs and said that she was just going through a “very hard time as you can expect”.

Bobbi Kristina Brown was admitted to a psychiatric ward in 2008 after she tried to stab her mother during an argument before turning the blade on herself and trying to slit her wrists. She had apparently grown up seeing her mother doing drugs and her family is concerned that she may follow in the singer’s footsteps in the more negative aspects of her life.

In 2011, Bobbi Kristina ‘s ex-boyfriend of more than two years was so concerned he spoke to Radar Online about her growing cocaine addiction that he says is due, in part, to her parents enabling her habits.

“I’ve tried to stop her, but all she said was, <<I’m just like my mother!>>” he said.

“It was difficult to stop her from buying alcohol and drugs because her mother gave her $1,000 a week. I saw Krissi do an eight ball – an eighth of an ounce – of cocaine in just two days with friends. One time Whitney bought a case of beer for Krissi and her friends to drink in front of her. I couldn’t believe it!”

Last March, Bobbi Kristina Brown took to Twitter to deny claims she had checked into rehab after The National Enquirer published pictures that allegedly showed her snorting lines of cocaine.

Bobbi Kristina Tweeted: “Excuse me, but I’d like to say that I am NOT going to rehab? I’m perfectly healthy and I am not addicted to anything but life.”

Long-time family friend BeBe Winans said he wasn’t aware of any alleged drug problems Bobbi Kristina was facing. He told Access Hollywood:

“I don’t know anything about rehab. I can tell you from being around her, pretty much all her life, and at the same time being around her in this dark valley, she’s doing wonderful. She’s doing wonderful.”

When asked about what part her father Bobby Brown would play in her life, Darlene Love added: “That’s really going to have to be her choice whether she wants him in her life… and I don’t think nobody is going to give her any information or try to move her one way or the other.

“That’s one decision she’s definitely going to have to make on her own.”

Although there are no custody issues because Bobbi Kristina is 18, her grandmother Cissy Houston is determined to keep a close eye on the teen.