My girlfriend came home and overheard my therapy session and listened in. Now she is very angry, how do I proceed?

My girlfriend came home to my on therapy through telehealth. She heard me talking about her and chose to listen for about 30 minutes before i realized she was home. she stormed out and was extremely angry at me. I had been talking about our relationship, and had in heat of emotions, jump to hurtful conclusions about how people around me feel about her, which is worry I misconstrued in my speaking as dislike. I had also been talking about iur relationships, some stresses, getting everything out and just talking through it. She says she feels betrayed and like she was stabbed in the back over this. I feel awful, and I haven't been able to interpret my feelings on this appropriately either, and I have been responding with anger. How do I proceed? What do I do? Sorry for the small details. it's for privacy sake.
EDIT: I do want to add other than what has been stated here, I did not say anything directly mean about her. I've only talked about issues we've had and how those around me might view her. She only heard me talking, and not my therapist. She is upset I would share any information about our relationship or what she's been struggling with with anyone, including my therapist
EDIT 2: I thank you all for all your support, and although im not replying to every comment I am reading them, and taking everything into account. I am also at work and work EMS so im sorry if I dont get to your comment


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