This.
I’d add these, too:
Keep in mind that colleges usually offer free counselling services.
You can talk with your dad and decide how to handle your mother’s unacceptable behavior together.
Where a lone man may be overcome, two together can resist. A three-ply cord is not easily broken. Eccl 4:12
As for your sister, remember that it is considered child abuse to make a child witness the abuse of a parent or fellow sibling. The child who is not made a target does not get off “scot free,” but also suffers from being in the same household with an abuser. Consider that you, too, might do whatever keeps you off of your mother’s radar. That isn’t to say that your sister doesn’t need to get motivated to do better, but to ask this: Aren’t there enough put-downs and harsh judgments in your house as it is? Don’t you want to find a positive way to get your sister to do more around the house? You might talk with your dad about how to accomplish that. Maybe he’ll invite her to do some home care with him, to get her started. It does girls a lot of good to have a good relationship with their dads and the positive regard of their brothers. It will leave her less vulnerable to being lured into bad decisions suggested by the first slimy guys who come along and try to flatter their way into her good graces.
There is a book, Co-Dependent No More, which has quite a bit of good advice on how to enforce your boundaries in a healthy and peaceful way. It is directly about coping with someone who has an addiction, but it really has to do with coping with someone that everyone else around them is tempted to accommodate. Most libraries have it.
