There would be no concerns for her if she was a despicable mentally ill narcissist or psychopath, perhaps. The fact that she is reveling in her hateful attitude rather than feeling deeply ashamed for playing her evil games tells what sort of worthless human being she herself is, IMO.
What could he have possibly done to justify her inhumane attitude? You're going to extreme speculative lengths to justify her vengeful taunting and obvious unfeeling selfishness for no known reason.