Exactly. Civil, mutual disagreement. Like adults. [There may be a hint of irony there. Just a smidge.]

She may do better if it really is meant for conversation without concrete plans. Or she may start criticizing everyone's fashion sense and telling everyone in robes to man up. Or, you're right, she may forgo it altogether, in which case maybe we've dodged an arrow. Still. I think we can work with any eventuality at this point. I'm not concerned. We've already got a good enough starting crowd without her.