Mary-Kate Olsen fled a screening of The Dark Knight in tears after breaking down at the sight of Heath Ledger in his final on-screen performance.

“It got to be too much for her,” a pal told Life & Style. “She wanted to go unnoticed, but people recognized her and started whispering. She felt really weird.”

“Between dealing with Heath on-screen and with everyone around her, she couldn’t take it. So she left,” says the spy, who adds that MK left the weekend screening after just twenty minutes.

Mary-Kate was rumored to be dating Heath when he died of an overdose in January.