Ask her what she would say if you asked her --- perhaps when you have both had a few drinks or are watching some **** or whatever..... BUT if there is no inclination that she may want to do it DON'T ASK ----- also be prepared that is she does -- and it goes on --- don't be surprised if you lose control and your wife sometime down the road
Ask her divorce lawyer.
Just mention it, she'll either like it or hate it. Don't push it on her. It might take her some time to warm up to it. But if she is totally against it, don't make her do it.