moving the mother in law

We moved most of my mother in laws things in yesterday. It is safe to say my back is officially broken. Not to mention my nerves are fried. She is already making demands and trying to change the way we do things around here. Telling us we shouldn’t have company over during the week and all. I am almost 27 years old and have been on my own since I was 17. I think if I wanna have a couple of friends over with their laptops to play wow for a couple of hours in MY HOUSE I am entitled to do that. This is why I didn’t want her here. But what can I do. It’s his mom. As much as I wanna punch her in the mouth and send her to her room I just can’t do it. My husband doesn’t go to bars, he doesn’t run around chasing women, he goes to work and he comes home. I think playing his computer game that costs 15 bucks a month is perfectly acceptable. But she thinks she has to be in control. So she sits here pouting because we didn’t send our friends home. They aren’t being loud. They are disturbing my sleeping children. They are sitting here with headphones on clicking away on their computers. So I say screw her! And if shes catches me on the right day I will probably tell her that. What am I gonna do? How am I gonna survive this?  She is only 63! People live to he a hundred! She will never live on her own again. He is her only child. I am stuck with her as long as I choose to have him. I just don’t know if I am strong enough. I have so many things to be grateful for and it probably makes me a horrible person but, I don’t think I can do this. If any of you have been in this situation and found a way to cope or be happy in a similar situation PLEASE PLEASE let me know