Marion woke up with a refreshed body and had already cleaned herself up, even before William opened his eyes. She was excited because William promised to take her to meet the mother she hadn't seen for a long time.
Based on what he heard from William, he was able to come to the conclusion that the man had met the woman who had given birth to him, shortly after he knew Marion. That means, the woman is not far from them.
Marion didn't dare to speculate about where Emilia was, just couldn't wait to meet and ask her mother a lot of things she should have asked her mother. However, the reality is that he could not possibly ask the woman.
The mother figure imagined by Marion, turned out to be very far from the reality she encountered.
Marion moved closer to William who was still asleep, looking at the man's handsome face, for quite a while, before finally landing a peck on his warm lips.