Something similar happened to me and my partner was also very jealous of my T connection and accused me of an emotional affair. At the end of the day her reaction was her issues and insecurity. A relationship with a T is one with no judgement or expectation, a sounding board for inner thought and processing. Your partner is not a professional and not equip to deal with the things you deal with in therapy. Sounds to me like your partner needs to take a look at her own feelings and realize that she can't be the sole emotional support of you. It would be overwhelming and unfair to her to attempt to do so. As for processing this with T, why not.... I did and it was very helpful in explaining things to my partner. Good luck.