Troubled star Lindsay Lohan's assistant has said that the actress, who is having a tough time battling her estranged father, has suicidal tendencies and may harm herself.

Jenni Muro, who works for the 'Mean Girls' star, told Lohan's father Michael in a phone call that the actress will commit suicide if she doesn't get the help she needs, Radaronline reported.

"I am trying to save your daughter's life every day. She is another mess, she's no better than she was two years ago and she knows that. If I wasn't around she would be in grave danger," Muro told Lohan's father.

"I gave up everything, my boyfriend and my dog and my parents and my new place in LA, everything just so your daughter doesn't kill herself," she said.

Muro also told Michael about Lohan's obsession with her on/off lover DJ Samantha Ronson, but assured him that Lohan has no other problems with addiction.

"It's an unhealthy relationship with Samantha because I don't ever think she knew love before and this is what she thinks it is, maybe it maybe it isn't, I don't know but it's her only addiction right now."

Earlier, Lohan's father had alleged that his daughter is addicted to prescription drugs which he fears will kill her leading the actress to file a restraining order against him and blasting him publicly on her Twitter page.