Whew that sounds exhausting. She pushed you to the ground. Let's see.....she had been drinking with her daughter in the car and she drove off.....intoxicated. She's injured (self inflicted) and irrational.
911 is a resource when things are spiraling out of control. She sounds like she is a danger to herself and others.....most importantly her daughter.
I'm sorry that you are having to deal with this difficult situation. You, your daughter and your dear granddaughter will be in my prayers.
gentle hugs
ke