Great my husband doesn’t know how to tell his sister not to come cause I don’t wanna deal with her…

Great my husband doesn’t know how to tell his sister not to come cause I don’t wanna deal with her son again and she doesn’t take care of him really just let’s him sit there and cry until someone makes her take care of her own child and he doesn’t even know how long she even plans on staying 😒I told him I’d let him handle his family situations cuz I’ve i had issues with his family before when I would speak my mind but I’m getting to a breaking point