Kirsten Dunst’s stint in rehab has been blamed partly on the death of Heath Ledger, claims reports. 

As reported by Entertainmentwise, the Spiderman star checked into Cirque Lodge after a week of wild partying at last month's Sundance Film Festival.

According to an insider, the actress' wild ways combined with the death of Ledger last month pushed her over the edge.

"She's not doing well," a source told People.com. "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."

"She’s been crying a lot lately, a lot built up,” adds the source. "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."

Another source claims that Dunst was in dire need of help.

"She [Dunst] desperately needed help," a source told Star. "She seemed to be intoxicated when she checked in because she was acting really erratic. She was extremely emotional, constantly breaking down in tears.

"She not in a good place right now, but thankfully, she's getting the help she needs."