@ARdoppelganger It's only going to get worse with her age. Set boundaries and move on. If you do not it's going to end up in a insane altercation in which you lose both of them and possibly your siblings. They will never turn on him.
@mixedgrass666 The 2 week notice is long over. Once you advise management you're leaving they treat you like garbage effective immediately. Those managers now have to do interviews, hire and train because of you. Exit interviews, screw that. You quit on Friday or just send an email.