Magic Forums

So a while back I did a bashing spell on my sisters husband to stay away. I own a building and my sister rents/lives below me with her 3 kids. Her husband is a complete drunk and just plain useless. He even tries hitting on me and he makes me so uncomfortable. She kicked him out around the time I did the spell and he's been gone for some time now. However lately he's been trying to worm his way back in to her life and is even talking about moving in with her again. Now just to be clear my sister DOES NOT want him back. It was a very hard challenge for her to get him out and she wants to keep him out (she wants a divorce). I now have a 2yr old daughter and I don't want him anywhere near that property. I need a VERY POWERFUL spell to keep him away for permanently!!! can someone please help me
Thank you
(sorry for long post)