Laurie, I think you are doing a wonderful thing especially for this young girl who really has nowhere to go. This would be my advice, from someone who was deluged with company after we moved to California years ago, even though it's hard to do, please don't give up your room, that will be the only place that you can be with your critters and by yourself for quiet, reading etc by closing the door when you want to be alone. There are very inexpensive air beds, or cots. I'm sure she is younger than you are and can adjust more easily. Believe me at some time you will want some time alone and your room will be the only place that you will be able to go to. I think it's wonderful that you want to take everybody in but you must think of yourself too. I hope it all works out, Good Luck.
Jackie
maybe you would be better to let them stay and you go out to your brothers in Mission Beach