I feel pretty much the same way. I don't swear much in general, and really try not to do it in therapy (although I have slipped up a couple of times.) My therapist also doesn't really swear (she too has a few times though) but I'm not sure if that is something she doesn't do in general, or if she adjusts based on how much her client does.

It sounds to me like she is just trying to get you to express and describe what you are feeling. I find people tend to use profanity as a crutch to express any strong emotion. Without it, we have to actually analyze and come up with the right words to express how we feel. I wouldn't be surprised if once you start getting used to swearing less and being more explicit in talking about your feelings, she backs off on correcting you about it.