Feb 7, People

Kirsten Dunst has entered rehab, a source close to the actress confirms to PEOPLE.

The Spider-Man star is being treated at the exclusive Cirque Lodge Treatment Center in Utah, the same facility where Lindsay Lohan spent nearly two months and where Eva Mendes recently checked in, according to the source.

"She's not doing well," the source says. "People were pushing her to go in there but there was no intervention… She has been partying hard for a while and I'm sure the Heath Ledger thing put people over the edge."

Adds the source, "She’s been crying a lot lately, a lot built up. …Everybody hits that bottom where you feel [so] scared that that one heavy night of partying can really wake you up. It's good she's getting herself help."

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