dear grrrr, I have no experience about step parenting, but I must say, horrible as all stories in this thread are, yours is especially infuriating because you have to live with the adult SD and put up with her everyday. It boggles my mind that dad doesn't do anything serious about it. I don't know you at all, but I couldn't live like that. I would resent my husband too much. I think I would demand some action from him and if nothing happened I would threaten with a break, going to my parents, moving somewhere else and getting some perspective. Sorry that I cannot be more constructive with this post, but if your husband cannot stand up for you, you need to make him. Best Luck.