Well, she's still pretty batty and moderately dangerous, but if he's only been through the events of "Mr. Yin Presents," her behavior will be remarkably improved in comparison to what he's seen. I wouldn't expect him to believe her if she tells him what happened, particularly that she's never actually killed anyone (no sane person would believe anything she claims without proof, least of all THAT), but he would be able to witness that she poses less of a threat than she did before. She isn't agitated by colors, exercises self-restraint over most aggressive impulses, makes an effort to look presentable and be polite to others, etc.

TL;DR: Would the fact that she seems to be making an effort to adjust her behavior make it any easier for him to deal with her presence, even if he doesn't buy her version of events?