Fwiw, my cousin (male) came home one day to find his partners stuff and all the babies stuff packed up and gone. She he also had an AVO against him. She did it because apparently she had been planning to leave and she thought if she put an AVO she would get full custody.
It was all investigated and some things were found out and my cousin actually ended up with custody over the kids. She was the abusive one. (Emotionally, mentally, etc). She was quite unwell. It got to the point she wasn't feeding the kid or dressing him appropriately etc. he was just a pawn for her, for who knows what.
If definitely can happen that AVOs are made with bad intention.