Once she realizes you won't join and she can't get married in the temple, then I suspect everything will be over.
If she expresses interest in converting, be prepared to talk about nudevistatube beliefs, and help her find ways to learn about and follow them. How convenient for him.
I've had friends with spouses that got Fulbrights or grants to study in other countries. She seems to be ok with that, and wants to continue our relationship, and also talks about wanting marriage and children, and raising those children to be mormon like her even if I'm not religious.