injured leg or thigh?

Went to check on our family this morning, poor Esme was limping and trying to balance on one leg. She still seems to be eating but not wanting to move. Her eyes look bright and her comb looks healthy and she looks at the moment to be alert,  but not sure if shes in pain? Her leg looked ok, could it be her thigh?It`s just started to snow and is cold, so i have put her in a box with shredded newspaper as a nest and brought her into the kitchen. She has food and water. Have i done right splitting her from the other two? Should i keep her inside? i was worried as she was not moving she would freeze to death. Is there anymore i could do?

hilltopper - how's your girl today?