I’m not Catholic, so I hope it’s okay for me to post on this thread.
My husband and I are in a similar situation - and I thank God every day both for his continued pursuit of me
and the patience he prays for and exhibits. Sex is so much more than sex, if that makes sense. There are so many factors at play.
I agree with the others that you should pray about the situation and seek counseling. I have been in counseling for the last 8 months (for more than this issue) and it has helped in a lot of ways. I hope that she will eventually want to go. I would also encourage you to find ways to pursue her that aren’t about sex. Do you do things together, sans kids?
When we have the opportunity. Until very recently, we have not had anyone willing to keep our kids. We have been on more dates in 2012 than we have since our oldest son was born (2008). We also started having nights where we feed the kids and then put them to bed to eat by ourselves about once a week. We started that back in Nov?..but fell off because of the holidays. (Not that kids are bad. I just think it’s important to invest in your relationship). Do you care about her opinions and she yours?
I think the answer is yes, but I feel like you might be getting at something and I don’t necessarily understand your question.
If I may gently probe a little further, what do you expect sex to be like? (You don’t actually have to answer that publicly).**Who cares if I answer publicly? It’s not like I haven’t posted my darkest secrets already…

To be honest, I don’t know what I expect. I have never been with anyone else (neither has she), so I have nothing to compare anything to. I guess my biggest want regarding sex is just the feeling that she WANTS me, both physically and emotionally. I want us to enjoy each other and I want it to bring us closer every time we do it. I want us to get the old butterfly feeling again… ** One thing that my husband and I have had to comes to terms with is that with my emotional issues and physical illness, sex isn’t going to be what either of us thought it would be. And that’s okay. God still has a good design for us and we are working to find that.
I sincerely hope that the two of you can come to a place of peace about this.