I'm sorry you are going through this! You don't mention where your MOTHER is?? Seems to me like she should step up and help with this situation, if she is able. Also, seems like she raised one daughter who thinks the world owes her something and she needs to be set straight. You have enough to take care of, please don't waste any more time feeling guilty about your sisters actions. Her husband should be able to raise his own children and you can help out being the "AUNTIE" if you so desire. Good luck with everything.