Just watched Casey's exit interview on Facebook. She said was never going to vote with Harry and Matt as she had problems with them while before the tribal swap. She was more aligned with Andy, Sarah and Hannah aka the CASH alliance who all ended up on the wrong side of the swap.
She said she wanted to work with the old champions as soon as she saw she was on the wrong side of the numbers. She wanted to stay close to Harry because she was trying to convince him to play the idol for her but to no avail.
If anyone wanted to know why Casey called Abbey's name. Apparently minutes before tribal, Abbey pulled Casey aside off-camera and told Casey that if Harry pulled out an idol, Janine would play it to save Casey. But after Casey's answers from tribal, Janine had changed her mind last minute.
She also mentioned she had never watched survivor when she auditioned and she was originally on stand- by in case someone pulled out last minute. Three weeks before shooting someone did pull out so she accepted and said she watched a few episodes during that time to see what she was getting herself into.
These Facebook live videos are pretty resourceful.