Why didn't she leave a message for his wife to turn up at the hotel to prove what he was like? Thought that would have been obvious and she could have timed it so she didn't have to go through with it.
Felt so sorry for Anna, but she has put them back to square one.
Once Owen and/or Gary find out they will go round and thump him (or worse) leaving them right where they were to begin with, so it will all be for nothing.