I am also majorly confused here.

You said that her satellite male entourage laughs at you behind your back.

Who told you that they do?

By definition, doing something behind another's back means that that person is unaware of what is being done.

Unless, of course, there is a 3rd party that observes and then reports on what is being done "behind the back".

So I am wondering who reported to you on what that flock of males was doing.