Wish: Russ C - affecting Sam A
[Russ wished Sam a wish, he wished her wish would come true.
So she forgets. Sam A forgets. She has no recollection, no memories, no latent muscle-memory fears of the man named Micah Callaghan. She remembers she wished someone away, but not why. She remembers, in a hazy, blackout way, the conversations about the wish - maybe not specifics, but emotions she felt, etc., and she remembers everything else she knew before and after. It's just as if Micah never existed for her. Whether she remembers things that happened, the actions, and simply not the person who did them or whether she forgets everything altogether, only she can say.
That's all there is. There's nothing to notify Russ of anything that happened. The man's memory is unaffected, his addition of wanting to forget making the wish two-pronged, and the hotel wouldn't give him that. He could only have one thing he wanted, so Sam got what she wanted.