My biggest problem with her story is, if it’s an accurate accounting of what went down, she’s still guilty of at least manslaughter. She should know better than to walk into a darkened apartment without backup.
Even if it had been her apartment and he really was burglarizing the joint, her confronting him alone when 1) she didn’t have to, and 2) he had the advantage (he’s in the dark, she’s outlined by the light of a hallway) is something I am almost certain she was trained not to do.
Her version of events is plausible, but not excusable.