Cougars, panthers, mountain lions.... all the same criiter just different sub-species. I know, I raised them for years. The western cougar is the largest. My male was 7'2" long from nose to tail and weighed about 175 pounds. The one you saw Rhonda (and yes, I believe you 100%) was either a VERY large Florida panther or a female western cougar,or possibly a young male. In your part of the country the Florida panther is most likely although they seldom hit 100 pounds.
I know there are lots of big cats in strange places because of the changing laws. A few years ago Mississippi passed a law forbiding the ownership of large cats and other exotics. I personally know of several people who raised them that simply opened the cage doors before the law went into effect and turned them loose because if they were caught with them they faced a very expensive fine and jail time. The state here basicly left breeders with no way to get rid of the animals legally.
Cougars are by nature VERY reclusive. I've hiked and traveled all over the US, western Canada & Mexico. I've never seen a cougar in the wild and have talked to very few who have, even people who have lived their whole lives in areas known to have healthy populations of the big cats. They will eat everything from mice to elk. In the western states, mainly California, they have been known to eat the family cats and dogs and have even attacked a few hikers and such. It really isn't in a cougar's nature to hunt man, but when a big cat gets hungry enough... we become "food".
One note on big cats; they always stalk and attack from the rear. In parts of India it was traditional for people walking dark forest paths alone at night, or for those who hunted the big cats there to wear a mask with big eyes painted on the back. Supposedly a big cat would follow and thing the mask was a person looking at them ad wouldn't attack. No idea if it's true, but It sounded possible knowing what I do about big cats.
I lost most all of our pictures when our house burned down several years ago, but I found a couple in my computer....