Need mom advice!

okay so my daughter has a pretty bold uni-brow (shes 2 almost 3) I wasn't too worried or bothered by it until last week. I took her to the park and a group of children were not kind to her about it. 😐 Today she asked me to shave it off like her daddy does and I asked her if she was sure several times and she sat down and had me do it. I mean if shes happy why not? Her body her choice. wellll my mother does not agree, shes really upset with me. Telling me I'm wrong and giving my daughter a poor self image.. am I wrong??