She's not gone, she's just crossed over to another life, and waiting for you while having some fun of her own.
It's pretty neat to think that you had such an influencial animal in your life. It's absolutely amazing to know that you were able to have such an incredible member of your family for so many years, and she sounds like she was very well cared for and spoiled along the way. Animals have this way of touching people's lives along the way. She is very lucky she was able to have a single set of owners who loved over so much for so many years.