It's not exactly true that ferrets need other ferrets around to keep from going crazy; frequent, interesting interaction with humans easily suffices to satisfy

It's not exactly true that ferrets need other ferrets around to keep from going crazy; frequent, interesting interaction with humans easily suffices to satisfy their need for stimulation. Between the tunnel runs, and the fact that happy ferrets are endearing, friendly little creatures in general, I doubt she lacked for enough to keep her mind active.