Re: communication issues
Well for one.....sh1t happens. Don't get so wound up. You can't always be in control or be like Burger King and have it your way.
First, let her contact you and allow her to explain herself. If she does not, then that's a different issue. The issue of consideration.
If she contacts you without explaining then you want to focus on stating your standards and expectations. No need to argue or attempt to tell her what to do. She is an individual and is allowed to make her own choices. Hopefully part of those choices is respecting you.
"You know it wasn't cool for you to do that right?" Simple. To the point. When you get the chance, change the subject. If she tries to argue your point DON'T. There's no need to argue about why she should or should not. You know what you want/like/expect. If she doesn't like it then there will be consequences. Mainly her not getting the sweet bf that she is used to talking to.
I can't stress this enough. NO ARGUING. There is no need. If she seriously tries to argue then tell her you will talk to her later. It will likely mean she is just getting defensive and eventually will get over if as long as you allow her and not interfere. Arguing about it will only make things worse and you will look weak.
If she does explain why (if she's a good gf she will) then just let her explain and tell her it's fine. Move on and try not to control every little thing in your relationship. Hope this helps and good luck.
"All things are subject to interpretation. Whichever interpretation prevails at a given time is a function of power and not truth."