What a sweet kitty. I'm so sorry you're having to go through this. I know how hard it is. I had to make that decision with my cat when I was about 18 and my parents were out of town. I'm sure Roxy knows how much she is loved and loves you even more for knowing when it's time to let her pass. At times like this, it's good to remember all the love and happiness you've experienced and that can help you through this difficult decision.