Say thanks!! Be sarcastic. She probably wish she was you with her fake self! Don't listen to haters. If she has a problem with it then tell her you don't care! If you like it that's all that matters. :D
You could just roll your eyes and shake your head slightly. Don't say anything, and just walk away, or turn away. This is a subtle and calm way of saying she's just ridiculous and not making any sense.