How is this not rape?
Fern used her unique ability (magic) to expose Stark's naked body, without his consent, and make a mean comment.
Imagine if Stark had done the same. If Stark had used his unique ability (physical strength) to expose Fern's naked body. Namely, by physically pinning her down and tearing her clothes off. That would be unambiguous rape.
Why does Fern get a pass here?