OK, your C is a very good choice. She's helped you with this before, hasn't she? So she'll know where you're coming from and what it's been like so far.
In my experience, showing any pro-marriage material to my ex-wife just made her more and more angry. I don't recall hearing about anyone who was able to reason with a WA during an affair. After the affair dies out, some WAs seem to come to their senses, but while they're high on the infatuation buzz, most don't seem to accept any other viewpoints very well.
So if you keep taking care of yourself and your daughter as best as you can, you'll get through this very difficult time. It's very easy to lose focus on what's really important.
More prayers headed Oz way.
Thanks,
Joe
My sitch More importantly, Light A Million Candles