If she does not know who she is now then she can rely on him and everyone else here to help her rediscover it. All hope is not lost, so long as she is here with him.

But when she mentions her home a thought occurs to him. "Ruby, do you happen to recall a visitor who came unexpectedly to your home one day when you were still quite small? He asked to speak with your father and you told the stranger he was upstairs?"