Your under her roof listen to what she tells you to do. My mother still tells my 26 year old sister what to do and just something that you have to live with. Deal with it.
You should clean up your mess and she won't dump your crap in your room. She shouldn't even have to pick the stuff up to throw in your room. You need to honestly get a grip and chill out and relise the problem is you rebeling towards them. I was in the same situation as you but I relised if I just did what was asked there would be no problem and if I did my share around the house everything will be ok. It really doesn't take that much effort to do.
I don't know what to say about your dog because I am not there but just save up some money like every cent and take her to the vet if she means that much to you. If the kids are hurting the dog then keep her away from them as much as possible.
You should clean up your mess and she won't dump your crap in your room. She shouldn't even have to pick the stuff up to throw in your room. You need to honestly get a grip and chill out and relise the problem is you rebeling towards them. I was in the same situation as you but I relised if I just did what was asked there would be no problem and if I did my share around the house everything will be ok. It really doesn't take that much effort to do.
I don't know what to say about your dog because I am not there but just save up some money like every cent and take her to the vet if she means that much to you. If the kids are hurting the dog then keep her away from them as much as possible.