Someone Came Into My Backyard

Currently doing some backyard landscaping job. On our security camera, we saw this lady always looking at our house and often time taking pictures. She even walks around my driveway and check on the backyard landscaping job.

Yesterday when I was out , this lady decided to come into the backyard. Workers were working in the backyard (you can't see them from backyard entrance), from her view she would have no idea who is in the backyard

She came all the way into my backyard to talk to workers, looked around and left

I was so mad that someone just walked into my house like that

Today she decided to come back with her daughter and grandkids. They were wandering around the backyard entrance, so this time my wife confronted them.

The latest daughter was super bitchy. She told my pregnant wife "why are you being so defensive? Oh maybe because you're pregnant" without apologizing (the lady who actually walked into my house apologized, but the daughter was being a bitch)

What should I do in this case? Should I get the police involved for potential restraining order?

Seriously, she could've just asked me rather than walking into someone's property like that