Should i ever let my mother in law around my children again?

I have two children 2M and 3F by my ex who hasn't been in the picture for a long time. They call my current girlfriend mom and have for a while now. I consider her their mom. We just got back from the hospital and have a newborn little girl so its three total now.I have no family other than my children. My girlfriends mother said she could stay at our house for a few days and watch our kids. I was pretty relieved that she said she could because the only other option was for me to stay with them while she gave birth which i would have hated.I didn't really worry about it because she's watched them before for a couple hours and there were no problems. The kids love going to see her also.The only 2 rules we had were no having people over, and no cleaning because she has a habit of throwing stuff away that isn't trash. Everything was alright until the 2nd day we were at the hospital. We called the kids to talk to them and they said my girlfriends nephew was there.We told her it upset us but we were kind of like whatever, we were mad but didn't make that big deal of it. We just reminded her of the rules at that was that.On the 3rd and final day at the hospital they were over there again cleaning out our basement. We got mad again, this time it wasn't like she forgot. She just deliberately went against our wishes. We told her that she wouldn't have done that and she blew up calling us ungrateful and said she was going to leave when my girlfriends dad gets there.Now her dad loves kids and the kids love him too but he's just too old to watch them alone. He cant chase them and wouldn't be able to hear them if they got hurt or something.We told her that she wouldn't be able to be around them if she left and she said that's fine and hungup.We left the hospital and started the 2 hour drive right after that. She didn't actually leave but stayed outside the whole time while her dad watched them.When we showed up with our new baby she didn't even say a word to us. Didn't ask to see hwr grandchild or anything. Got her keys and left.The kids have been acting terrible. And she gave them two gallons of chocolate milk. I don't think she even really watched them.Im honestly so pissed. She's not going to be around the kids for a good while. Should i ever let her back around?I mean she's shown that she doesn't care imo. I seriously regret leaving them with her. via /r/Parenting https://ift.tt/36FQYRo