To answer your question, no, it is not worth it and I would leave your wife ASAP. She is abusing both your daughter and you. This will not change, as I have learned the hard way myself, and likely will only get worse. You're not doing your daughter & other kids any favors by staying in this abusive relationship. Your daughter will be damaged from it, as will the other kids, and that damage will only get worse as time goes on.