You don’t really know what she shares in therapy and what exactly her therapist praises her for. It’s private. Saying that of course it’s wrong if she treats others bad, but she is in therapy maybe trying to deal with trauma first and then deal with current behavior. You can’t really control what she does or doesn’t talk about in therapy.

Are you in therapy yourself? I notice you have several threads about being surrounded by various people who are either toxic or treat you badly or you
think are not honest about something. Is it something you are addressing in therapy?