S.M.
J. G
I have been throught this problem. It is a stage that all children go through. What helped me get through it was when my son did that I started to do it with him. I know it sounds silly but it actually works. When my son started to through his fits I did the same thing also. And about your mom she isn't in the wrong. My mom did the same thing also and that actually helped him to stop. But in the long run, eventually, your daughter will stop it. My is now six years old. I have 7 nephews and 1 niece that did the same thing and that was how we broke them from doing it also. Try it sometime in your house and see what she does and let me know.
S. Leach