To all the people saying chief should get away from her, let me tell you a bit of wisdom that come with age:
Don't, for the love of everything, push a Yandere away. At least, not abruptly. If you really had to/want to get away, do it slowly, reaaally slowly, and make sure the Yandere had no way to get to you after you run to never look back.
If you cut ties with them suddenly, not only they will get more obsessed with you, they also will be angrier and less inclined to give you a trace of freedom. Worse case they end hating you and there is no God that can save you then.
Remember, keep your friends close and your enemies closer, guys.