How do I protect my Fiance?

Alright, so my fiance is very widely known and that's why I don't give out her real name. The problem is, recently we had people show up to her job and harass her. Yes, we reported it to the police. They sent a car to watch over her but after a few days they left. I realize no one actually has physically harmed her but she is tired of people running at her and so forth. Her son's friend's parents ask to come over but really just want connections to high ranking people. She has had enough.
So, I ask you what do I do? Is there anything I can do? We are just simple people who just want to live our lives.