Kitty's dilema

This is Kitty. She's 10. This shed has been a place she goes to in the summer for a nap and in the winter to hunt for mice or to sleep in when she's stuck outside for the night. Three days ago this is where she was when the weather was a nice 25 degrees out. After calling and calling she stayed there for the night. Day 2 the weather was still a nice 20 degree's. After calling and coaxing Kitty still chose not to come down. That night the temps got down to the teens.