Jealousy is a form of control. It also has the additional connotation of being immature.
So are you overly domineering?
Do you ever call her names or suggest anything to make her feel bad about herself?
Have you ever hit her, or threatened to hit her, or used any other form of intimidation to get your way?
If the above answers are yes then you are too domineering, and that is much worse than being jealous once in a while. It is bad to be jealous but what you do when jealous is really bad (unless it's nothing).
You should tell her you don't want her going out with a bunch of drunk friends who are still looking for their man. You are right there is an attitude about the clubs, go with her that would be nice but she shouldn't be going out alone to clubs often.
If that is the sort of thing she is set on doing that would not make me mad... It would just make me think it isn't worth me getting mad, as a matter of fact she wouldn't be worth thinking about at all.
Your girl seems to have made sacrifices for you. If you are dominating... you should ask yourself why does she put up with it? If your domination is as extreme as you think then she would probably have low self esteem and depressive tendances or she would be out of there in a flash. If she has low self esteem and is looking for her ego fix where ever she can (I'm sure everyone has met one of those girls) then you do have reason to be worried.
If someone cheated on you in the past, why? Were you overly controlling then too? Why did you pick someone who would cheat on you without the backbone to tell you she wants to leave.
I didn't tell you what to do but there should be enough here to think about.
Now if you are in a relationship with a very mature girl and none of this makes sense... then your canary isn't dead and you dont need to worry.