I wonder why...

Well, in the end when the family went to drive off again, Patrick doesn't tell his wife exactly why.
When their car got stucked an Patrick went off to a house to get some help, he tells his wife to lock the car. So it's obvious he is scared.

But when he came back, his wife and Agnes already got picked by the crazy pair.
It was said that Louise called them! Why would she do that? Yes, at that point she did not know what really was going on BUT her husband wanted them to leave!
So why call the crazy pair?