Hey Ash - So glad you have decided to stay and also so glad that Sheeba may work out. They do change a lot while they are adjusting so just be patient and I'm sure your brother will come around.

I would sign her up for obedience ASAP. She needs to be socialized around other dogs and as many people as possible. Since we have no idea about her history, you should just assume she's had no socialization and start with a clean slate.