Step parent / birth mother problems.

My SO and I are pregnant with my first. His ex and him have been separated for 3 years now. In the last 2 years she's came threw our home multiple times to gather her things. It's been about a year since she was last in here. Since she recently found out I was pregnant she wants the nursery cleared of everything and given to her. When their youngest passed away she had people coming to her home THE DAY HE DIED and buying things out or his room like it was planed. She just so shady.