Aillidh would do that as well. Never could figure out why. She was born during the hottest summer on record, however, and when my mom came across, she thought Aillidh was cold. We'd be laying her down w/just a babygro on! Sure enough, Mom put a little pair of light trousers on her and a light blanket and she slept much better.
Is Courtney at a good temp? Touch the back of her neck to check.