12/21/2006 AT 01:30 PM EST
Miss USA Tara Conner entered rehab in Pennsylvania on Thursday, Donald Trump, who co-owns the Miss Universe organization, confirms to PEOPLE.
Conner is expected to stay at the facility for three weeks, according to a source.
On Tuesday Trump allowed Conner to retain her title
despite allegations of drug and alcohol abuse, indiscretions with men and her apparent lack of reliability when it came to showing up at Miss USA-related events.
"I've always been a believer in second chances," Trump said at a press conference before announcing that Conner would go to rehab for alcohol abuse. "Tara is good person. Tara has tried hard. Tara is going to be given a second chance."
Conner's troubles also resulted in a nasty feud
between Trump and Rosie O'Donnell, who criticized the real-estate mogul's decision to give Conner a second chance.
Conner, who turned 21 on Monday, admitted to drinking while underage, and tearfully apologized for her behavior. Still, she said Thursday, "I wouldn't say that I'm an alcoholic. I think that would be pushing the envelope."
Trump, who plans to have Conner take regular drug tests, said she could be a role model for other "troubled people".
"I don't think she's denying she's an alcoholic," he told New York's Daily News.
"She can be a great example for troubled people – and she's troubled."