Should I reach out to her?

So Im going to do my best to make this short. Recently (against my better judgement) my family moved with my husband's brother and his gf. Let's call her "Shayna". "Shayna" and I have always got along although we do go periods without keeping in touch. When we get in touch again we always pick back up like nothing. She would vent to me about issues with my BIL and I would ALWAYS have her back because she would tell me how awful he treated her. Their relationship has been extremely tumultuous.

Well, Shayna and my BIL recently broke up after violent fights, etc. She moved out and despite still talking my BIL hasn't wanted her to move back in. A few days ago Shayna came by with a friend to pick up her belongings. When she heard my husband on the phone with his brother (her ex) on videochat who wanted to make sure she was only taking her own belongings. She immediately got upset and was arguing back and forth with my husband. I was in another room with my children but could hear. I opened the room door to see what was going on and she was yelling that she was recording that there was drugs in the house with children present. And she started filming my children. I shut the door. She was yelling that she wanted us out of "her" house and that she was calling cps and police. She ended up calling the police who didn't buy her story, probably because she was behaving very erratic. They came in to help supervise her getting her belongings. When she came in with them she looked my way and said "Oh you hid your drugs?!" in a very whiny childlike way, and the officer told her to stop. Yall 🤦🏾 I was so shocked. We have never had a falling out. I don't do drugs or drink for that matter. I dont understand why she would do this especially after she has lost 3 of her 4 kids with cps. Why would she try to make me lose my babies too?