I think that, if Tyrion got wind of where she was, he would go himself, with a large contingent of soldiers, to get her and bring her back to KL. He doesn't want to risk some random Unsullied deciding she'd be better off dead. And then she gets actual chambers and escorts around the Red Keep, once Tyrion pleads her case to Dany. So, yes, it's workable! Come join us :D