I second what everyone else has said. Take care of yourself for a while, and leave the family drama alone. Keep it as simple as possible. Your number one priority right now is getting and staying sober. Everything else can wait until you feel stronger.
I ended up almost completely cutting ties with my father for quite some time. He was my number one trigger for drinking, so I removed him from the picture for a while. He didn't understand, and blamed me endlessly, but I didn't let that bother me. I was protecting my sobriety. That's what you need to do. You cannot control what others do or say or think. All you can control is yourself and your actions, and trying to figure out why people do what they do is a never-ending game and drama you do not need right now.