I've got a friend who has a very old budgie. It sits on it's perch not doing much since it lost the ability to fly, but once my mate puts on a bit of Poker Face the bird goes crazy and dances in tune to the beat.
Not saying Charlene reminds me of an yellow adding budgie........ OK I am just a little bit

Charlene certainly deserved to stay over the awful Corey! Can't see her staying in the show too much longer and it would be a shame if her delightful personality caused her to stay over another contestant who has genuine talent?