I agree with the others.
Im not sure the Armys stand on married privates coming out of basic that arent living with their spouses and whether they CAN even live off base. I know in the Marines if a person is a lance corporal or below (specialist in the army I think) and they are not living with their spouse, they have to live in the barracks. It was only because Jamie already had a lease for 12 months in his name that he was allowed to continue living in his apartment when his wife separated from him. He would have had to break his lease and that would have been a big problem for him. Then after that he was a Corporal and he was allowed to live off base by then.
The Army may be different though because the Marines tend to be tougher on things like that.
She is also making things rougher on herself moneywise. Sure she will get a housing allotment but it costs quite a bit to live. Who knows...just sit back and wait. It will all play out. She should be sending money home to her family. She gets money for them.