The person who was scheduled called up a couple days before and said "Oh btw, I'll be in maryland so I won't be able to work on thanksgiving. My manager who requested the day off forever ago got to work on the holiday she really really wanted off.
She also gets to work black friday.
This is a second job for her, she's actually a teacher but works retail for a few extra bucks (which I think is horrible that a teacher would have to, but that's another rant). She's getting screwed and is already under too much stress as it is.