My husbands EX...Ugh!

So I need some feedback... Here's the scenario: Spring Break started on Friday, however the children got out of school a half day the Thursday before. My husband and I have custody of his children all but three weekends a month. His ex began texting him Wednesday night telling him she was picking up the children Thursday after school. He told her that we had family plans that night since we would not see them for Easter (grandparents and my two children) were going to have dinner and exchange Easter gifts. She harassed him all day Thursday and sent messages to the girls schools to meet her in private locations where we wouldn't look. The poor girls got pulled in the middle and all of their things were here due to no plan of being with mom. She then proceeds to demand that he bring the girls belongings to her since they will need them...basically cell phones (they have to leave them home during school). My husband told her no. She then showed up in front of my house demanding them. Now, for years she has not been allowed at my house because she scares my kids and causes problems but I do not have a restraining order. anyway, we told her she is not welcome here and needed to leave, she refused. This took place in front of one of the girls she had in the car. I went outside and told her she could sit there until next year but she wasn't getting anything from us. She left shortly after. But her text messages continued until 10:45 that evening. What came next was a knock on the door from the local police stating that we were with holding medication from one of the children! OMG! are you kidding me? My husband explained what happened and the police were very unhappy to say the least for her abusing the system. Needless to say she still did not get what she wanted. Sorry but bad behavior doesn't get rewarded no matter what age you are!
So I'm contemplating getting a restraining order. The only reason I haven't in the past is because I did not want to preve