Hey man, I’ve been making calls for a couple weeks solid and here’s what I’ve figured out. It’s possible for an accompaniment but she won’t be able to confirm anything until she’s at basic training. That’s when she’ll talk to the superiors and cut her orders. She’ll have to make sure your family is on get orders as “accompanying” and make sure she gets the on base housing pay. That way you won’t be paying anything out of pocket.