This is just awful. The toll on you, mentally and physically, must be immense.
I think chicken is right and I really think a word with SS might be a good idea. Your daughter's violence is disturbing. Kicking you like that is absolutely unacceptable and no happy (NT) child kicks their mother like that).
Just to reinforce what you already know: your mother does not have your daughter's best interests at heart. Your daughter needs consistency, two caregivers holding the same line, a regular structure and boundaries.
Could you get a lawyer involved to get your mother out? She is pure poison now.
Tbh since your daughter is already past her 10th birthday, I wonder if you need to move further away than you're already planning. From everything you have written, your mother will carry on trying to get contact and frankly seduce your daughter into living with her. Your daughter is the most important person in your life and it's a huge thing to do, but moving further away might be safer.
Looking from the outside and with the list of behaviours you've mentioned (and I'm sure there are thousands more interactions like these) then I think that not letting her know your new address, removing her number from your daughter's phone and severing ties with her is the safest option for you. It's extreme, but from all you have said there is a real danger you will lose your daughter to this highly indulgent and very poisonous mother. God knows what she's saying about your to your daughter when you are alone.