I know. It has. But it doesn't sit right with me. I'm not suggesting that they went out drinking together - but maybe, they had met. Maybe he liked the look of her. Maybe she looked like his wife when she was younger....
Just a list of maybes and an unexplained reason for her interacting with him make me think.
BiB (and bolded by me) - When I saw the pic of his wife I though that too, and also of Claudia Lawrence which caused me look in the media articles for where he had lived. It seems it's been Dover area, so I thought nothing more of it. Then it turns out Sarah is from York. There's nothing been released of any connection from him to York, so I'm not going to speculate on that, but the physical appearance thing is noticeable.