Mil and kid

For those of you who your mil doesn’t take care of your kid and don’t have a good relationship with her. Do you let her do whatever she wants with your child? Mines thought she could do whatever she wanted without asking, taking my kid from my arms without asking, changing his diaper after I told her I just changed it without asking etc. And that has ended now she isn’t allowed to do what she wants with my son and will never be allowed to take care of him