Sissy needs help for surgery!!

Sissy was rescued from the Forsyth County Humane Society.  She is our resident pet at The Villas at Canterfield, a Retirement Community in Cumming, GA.  She brings such joy to our residents, family members, and guests!  She's sits calmly next to them as they pet her, and greets visitors at the front door.  When we rescued her, it appeared that she'd previously been tangled in something.  She had a slight limp and a lot of scars around her back right ankle.  Xrays showed a snapped ligament.  Over time it has become more swollen and she wont' put any weight on it :(  The vet said that her best option is to amputate the leg.  Please help us to raise money for Sissy's surgery so she can come back to us as the sweet, fun loving dog that she once was!!