S.L.O.W.L.Y going crazy

[33 Daiseys]

For me in my experiences in dealing with this , child is to sit in a pack in play away from children when not sitting right there.
Hugs are al-right, any other contact ie hitting, grabbing, pushing results in immediate removal of the situation.
In both cases it resulted in my terming them. In no way in hell am i going to be having other children hurt, due to parents bs parenting.
at pick up, if she does it again, put child in time out, right in front of mom.
When mom looks shocked let her know that this behaviours are under no circumstances allowed at your home, and that from this point forward, this is the way it will be.
I'm sure her realizing that her ineptitude to parent will result in her child being reprimanded, and loosing out will let her know how serious it is.
If not cut her loose.