If you have kept her inside since she was found, she may just be relishing the outdoors again and on a "romp" in the warm spring weather. But, checking out where she was previously is of course a must. Something might draw her there. My Bean goes outside and as much as I have anxiety everytime he's gone longer than I would like, I know he's just too much of an outdoors boy to make him change now. She loves her life and you let her live it but I know that anxiety...Prayers again until she is home again

BTW, how old is she? My cats have always tended to stick closer to home after age 6 or so.