Have you tried without the mod? I'll get the option of marrying her shortly so I'll test it but I don't see how this would have any effect on her ability to have children since the wife data isn't changed in the slightest. It's possible that I made an error with one of the children and it's no longer able to spawn (sounds horrible when I put it that way
). Have you had enough enough fights in between? What version of the game are you running? Any other mods?