This is perfectly okay… and YOU are perfectly okay for not being okay with gaslighting! :) There’s a saying (I can’t remember the exact quote now or who said it) that goes something like: Learning to accept something unhealthy is not a sign of health.

Gaslighting is a form of abuse. It’s normal to struggle to accept it. Anger at being gaslit is indeed a “rational” reaction. If you feel deeply disturbed by gaslighting, and if your innermost instinct is to be totally unnerved by it, then kudos to you!