Tell her that empathy that causes her and the people around her pain and discomfort isn't empathy at all, it's just selfishness. Lots of women make this mistake because weak and predatory people gaslight them into thinking being a "mommy gf" to a manchild is a virtue and not a nightmare. That's why this Cooper troon wrote Pomni and the other female characters the way he did. He thinks women exist only to serve men, because he is a troon.
And tbh if she's stayed with him out of pity and he's still trooning out, her staying with him must not be helping matters much. He is actively ruining his life, loudly and in public while talking about clown porn. Get outta there, girl!