[33girl]

Tell her the doctor said that due to your pregnancy you should not be under the stress of taking care of 4 "lively" children. If your boyfriend's brother is such a doormat that he'll be mad at you just because this heffa told him to, that's his issue. Your relationship problems are yours and theirs are theirs...she might want to pull her head out of her ass and realize that (sorry, but this is what it sounds like) considering he can't even converse with her, she is serving as nothing but a receptacle. Period.

At any rate, if you have to tough it out for a little while longer, try to get the 9 year old to help you out as far as the smallest ones go. If they're still doing this crap a couple years from now SHE is going to be the one stuck watching them all the time, so it's in her best interests to straighten them out now.