when the boat heels, her brain is flooding her with "DANGER' signals that gives her the whirlies, nausea, vertigo, etc.
Perhaps you could consider a relatively small multihull for no-heel sailing. One of the Ian Farrier folding trimarans like a F-27 might fit the bill. You'd even save on slip fees with one of them since they're trailerable.
Performance cruising used to build the Gemini catamaran in the area.