Please help! my sister has changed. what's gotten into her?

after my half-sister tried to seduce me and licked my cheek, i got angry and yelled at her, and accidentally brought back very dark and painful memories for her. she ran back to her house and locked herself in her room, ignoring me when i tried to apologize. eventually, i managed to get a hold of her, and apologize to her face-to-face. she wasn't mad at me for saying what i did, but was very depressed and started contemplating suicide. through hours of trying to get her to reconsider the thought, i successfully convinced her not to attempt it, though she already didn't think she'd be able to go through with it. the means of convincing her were really hectic, and it's changed the way we see each other. she hasn't tried anything else on me since, and when i asked her about it, she promised she wouldn't do it again. i'm happy to hear that, but somehow it seems she's become a completely different person. normally, she would cheery and excitable, but since we talked, she's been really calm. and when she looks at me, she doesn't do it lustfully or sexually anymore. instead, she just stares at me, smiling. what happened to her? she's completely different from her usual self!