Sorry about your recent experience, but since she seems to workout with your touchup I keep her for that and let her rollerset instead. So far, my experience with stylists and their flat iron technique has not been good. Whenever I would let them flat iron I smell like burnt hair every single time, so I just stop going all together.
So did you like the stylists that you went a few months ago? If so, I would say try her out for minute and see if she listens to you about your haircare.