Re: Clubbing all the time...
First off, it's not 3 or 4 times a week. It's 3 out of every 4 weekends, which is bad enough..
I see that I misread what you wrote. Got it.
3 out of every 4 weekends is still bad. That means she parties more than she's at home with you.
How old is this friend of hers?
I actually have more trouble trusting her with this particular female friend than with the guys at the club. I know she won't do anything with them.
You don't know that.
Anyway, the bottom line is you need to state some boundaries to her and follow through with consequences. If not, you can expect more of the same.