Should I go to my ex wedding?

Broke off a relationship early this year. It was a long and complicated one; we decided it was going nowhere. Soon after her parents arranged her to meet this guy and immediately set up the marriage. It is about to go down in a few weeks.

A few months ago we had lunch and she personally asked me to set the date to attend the wedding.

I feel like she hasn't moved on. Everything moved too quickly for her.

Should I go?