Hairdog,
Why not make the offer to go with her for a few sessions?
You can tell her that you want to make sure you are doing all you can to ease her transition to a new city and to make sure that she knows you take this seriously.
Btw, if you are NOT taking this seriously, then you should commence doing so.
She did make a huge sacrifice for you. This does not make you indebted to her (that is something she needs to get over) but it does mean that she may need to see that you understand.
I know you will write back and say that you understand but, hey, SHE doesn't feel that you do.

She may or may not be blowing things out of proportion but those are her feelings, you know? She thinks that you are blowing the sex thing out of proportion, too.

So what about a show of solidarity and offering to accompany her to the C in order to see how you can better support her?
I know right now you don't want to do sh!t for her, but it may help things...

Just out of curiosity, has she ever presented you with some concrete ways in which you can support her through her transition? What was your response to that?

Honey, feeling uncharacteristically sympathetic to MrsHD today...