*sympathy*
My wife transitioned 5 years ago, and I'm happy to talk about anything you need. It sounds like you're in that tough spot at the very beginning where you're both working to redefine your relationship and additionally she's figuring out who SHE is. That can be really hard on partners, no matter how supportive, because everything is in flux and you don't know what the endpoint will be like (or if you can live with it). You deserve a lot of credit for sticking it out so far, and I'll recommend (against my own experience, if only I could actually have taken my own advice!) that you not worry too much about far into the future if you can help it, and focus on whether you can cope with what's happening now and are still willing to stay for the time being.
Wheat Thins : That was rude and spectacularly unhelpful. Very early on, it's common for partners to have trouble adjusting to name/pronouns - whether you've realized this or not, it can be acutely *painful* for us to give up the old, and many times the trans* person is willing to accept some compromise in the face of what their partner is going through - and I've known many, many couples who are happily still together post-transition despite hiccups like that at the beginning. Similarly, I know several straight women who stayed with trans women, and not all have chosen to redefine their orientation, either. Some even continue to be intimate with their wives even though they're not *generally* attracted to women. This is the PARTNERS section. Please consider that this is a place filled with potentially vulnerable, desperate people who are trying their best to stick by a trans person.