She might be lost. I saw some tracks that looked like her's yesterday--at Happy Jack.
Following Curly's tracks was an interesting adventure. At one point she had veered off the trail and went in a big circle before finding it again. She may very well have done an excursion to Happy Jack in there, as well. In fairness to Curly and her estimable O-skills, the snow made the going quite "green". Lots of youngish birch trees with leaves still on bent over and blocking progress along the trail and in other interesting looking directions as well.