Her owner would not believe she had hopped the fence. "No matter, I had seen her do it, and I knew." Eight+ years later, that dog can STILL hop the fence? And Bob still doesn't believe he didn't dig her way under, despite no dirt mounds.... no wonder you took the long way around. That Bob. :)
Sidney looks like a blue heeler (or mix) - that could explain her longevity and agility! Gotta love her!!!