Transgender Support Group
This community is here to support and help the large population of transgender people. If you or anyone you know identify as transgender, this is the place to share your feelings and experiences and speak with others who are going through similar things in their lives.
I am not sure if any of that helps. At the core she will still be her. She will change her name, her pronouns, the T could make her "smell" different, but she is still her. I think your attachment to her will weather that okay in the end. You two are a couple, so talk to her about it and you don't have to ask her to stop, just ask her to give you a bit of time to adjust when the point comes where there are things that you are struggling with. It's going to be new to both of you and you both will have to walk the path together as a couple as long as you are together. Right now, today, she is the person you fell in love with, she always will be inside, the outside may change (she will grow older, her body will grow or shrink, her hair color may change) but she is still the same person. If you love her as you say, and you two can go at a pace that is comfortable for you both, I am sure that you two will be able to get through it together. Just make sure she knows you don't want her to stop and are fine now, but at the point of T and all, you may need time before some other things happen to get used to those changes. Hopefully some part of this helps. *huggles*