She wasn't going to stop him from leaving, because she knew it would give her away too much if she did, but that didn't mean she couldn't throw a comment after him as he left her flat.
"We'll see you tonight, love," not explaining who the 'we' she was referring to was. She could have meant her and her family, though she was really trying to prod him about the fake baby again. She may not have won the bet, but seeing his reaction to this so-called pregnancy was about as wonderful as winning could have been in her mind. Maybe she should have thought of this one before. Messing with Zacharias Smith's mind was far too much fun.