I've been working at writing since the early 80's and just lots of my work has never been outside my own knowledge. In College level writing classes, I've experienced both Instructors and Visitors sharing that they often write things that are really explicit or that share quite painful things, but limit what others see to what they see as socially mild. Perhaps this woman has experienced things that you have triggered? Most of what I write is not to be shared with Church people and maybe that is hypocritical. I have attended a writer's group that is both Church folk (Mormons) and non- Church folk. I'm very cautious about what comes to that group, the painful goes to my therapist. Recently I shared with her my conflicting feelings about having been involved in BDSM groups in the past and my pleasure at being spanked. She told me that these things are more common in our society than one might imagine. It was good to get that off my chest, and I feel much less guilty. It is unlikely that I will seek involvement in those activities again.

You are not responsible for her feelings, though perhaps you might be careful about your venue?

PS. I'm working on one right now where part of it is very xxx. Right now it seems a conundrum as to how to edit that out without gutting the story.

I think it succeeds as a piece of writing. It is a little disturbing which is why it works. If someone as unempathetic as me sees that it might hit someone else harder. I believe that writers should occasionally make us look at disturbing things. The person being upset may not agree with that.