I thought the reason she retreated to Rosie's room and confessed when confronted was because Linden said they caught the killer. She had to think that meant they had Ames or Jamie. There was no way they wouldn't just point the finger at her.So she thinking she was caught.

I thought the reason she retreated to Rosie's room and confessed when confronted was because Linden said they caught the killer. She had to think that meant they had Ames or Jamie. There was no way they wouldn't just point the finger at her.So she thinking she was caught.