Two exes coming to a friend's event.. go or skip?

One I broke up with, one cheated on me. The cheater is more recent (~2mo).

Should I show? I was gonna go to this in the first place until I heard she is going. Feels silly to dip out now because she's going.

She got invited to this event by accident according to my friend, since he just duped the event from before when she was invited on my acct. As girls usually try super hard to take over the friends after a breakup.. she shot him dms saying thanks for including me bla bla I'll be there. Predictable.

So I've got a few options and notes.

Option A: dont show. No risk no loss. Not a big deal as its a minor event I have little investment in

Option B: Go. Be chill, nonreactive, etc. Not tryna bring a girl, not tryna make anyone uncomfortable or prove anything. Just go do my thing and hold space.

Option C: Ask my friend to just uninvite her. Hes a close friend and one of the few people who actually knows she cheated. He'd probably do it. Maybe she shows up anyways, maybe not. Either way he knows not to invite her to future events.

Note 1: I dont want the cheater back. At all. I think I'm in a good place to just hang 10, I fucked up trusting her but am actually pretty happy being single again. The other ex id actually fuck and I know she still has feels. Could be amusing.

Note 2: Cheater ex could always show up with a new guy. Some rando.. probably wouldn't care. If it's the guy she cheated with? That would suck. Not going to pretend like I'd be able to enjoy myself at that point.

Thoughts?