Improving your partners improv skills?

Looking for some advice.

My partner has really put effort into pleasing me and has become a truly threatening ballbusting queen!

But she does lack in the “language” portion of that fantasy life. She tries to say the things she thinks I want to hear but she does struggle with the dirty talk. We communicate well enough but sometimes the things that come out of her mouth make us both just laugh and although fun in the moment, I’m looking for her to improve in this aspect.

So I’m looking for advice on how you guys have found success with this or just stories of this aspect in general.

My wife knows I love to hear her say how bad she’s going to hurt me or what my balls are gonna look like when she’s done. She knows the idea of rupture is hot to me. Communication isn’t really the problem, it’s more about her finding comfort in the fantasy.

I think a lot of this issue is due to the fact that I’m so deep into this kind of play and the power dynamics that it’s hard for me to really have her understand all that. After all it is MY fetish and not hers.

Any words or thoughts?