You are better off speaking up first. Tell your wife that you love her way to much and NEVER EVER want that to happen again. Start crying and say you felt violated. That may help you for a little bit
that's actually not a half bad idea.........even if she wants it to happen again, it would score big time points if you told her you didn't want it to happen again, definitely show no enthusiasm for it happening again.....LOL.
But I'm not sure letting it go is the right thing..........if this story is true, there's alot of underlying issues here. If this was something both of you had talked about before and were ready for it and both of you knew it was going to happen......one thing..............the way it went down, totally different thing. I would bring it up..........you need to know where your wife was coming from on this. Is she really a lesbian? Did she do this because she cheated on you? what? How long have you guys been married?
Monday at work is going to be a nightmare for the two girls. They're probably going to spend the whold day avoiding eachother - and if they do have to speak they will be sure to avoid eye contact.