Which housing allowance would an unaccompanied soldier with a secondary dependent be entitled to if he's in Kelley Barracks?

DFAS has always approved my mother as a Secondary Dependent and I've always recieved BAH at the w/dep rate for wherever I've been stationed, i.e. HI and FL, even though she's always resided in MA. My question is, what would I be entitled to if I were to get an assignment in Kelley Barracks, Stuttgart, Germany as a Reservist on a CO-ADOS tour? Would I get any Housing Allowance or would I just get thrown in the barracks, not get any housing allowance, and end up having to pay out of pocket from my base pay to cover my mother's living expenses in MA?