I feel like the question being asked in this thread is:

---Is there a way for me to invite Shadowheart into the party and then get her to leave the party (and the campsite) *without* me personally initiating combat with her?---

And then there are replies about DMs and dealing with it and so on. And I can't help but think none of that is addressing the question despite coming across as so aggressive.

I just wanted to help clarify the conversation, but I'll certainly let it be. I'm not sure there's a bridge to be made here.