Well, you can try and reason with her and even get upper level involved. It could go either way, really. I tried to reason with DD5's kindergarten teacher throughout the whole year and it was a big mistake. She had her ignorant opinion firmly cemented in her limited little psyche and no matter what evidence to the contrary, she was not changing.
Unfortunately, she would smile and say all the right things and agree to incorporate recommendations from the gifted psyd. in the classroom and then turn around and not do it. I was patient, I was reasonable, I was polite, I was firm, I escalated it, I had the principal's support, I did everything right.
At the end of the year, my child was miserable and I don't regret many of my decisions, but this one I do.