Did anybody else notice that she didn't give a counter-sign? Well, unless, "welcome", was the counter-sign, but that's an extremely poorly chosen one. The other contact had and gave a counter-sign to the correct signal. Presumably, they all should just as a matter of good tradecraft.
As far as the team actually knows, they got lost in the dark and rain, stumbled upon completely the wrong farmhouse, got invited in as a matter of ordinary rural hospitality, and then told the confused inhabitant, "Hi, we're ninja sent by the world's most notorious spymaster to give you this confidential information and solve any problems you might currently have."
Regardless of the actuality of the current situation, there appear to have been a lot of very serious screw-ups. Ironically, Hazou doesn't appear to have been directly responsible for any of them.