This is so sad. I just read your thread about her (missed it the first time). I'm so sorry... She looks so content in the picture, what a sweetie. RIP beautiful Bea.
I am so sorry to hear this, but please dont feel guilty about adopting her out - you did it for her, and it was a good home, she was lucky to have had such a fantastic person looking out for her, after such a poor start, but 2.5 years after a CRF diagnosis is really good, and testament to how happy she was in her new home. RIP little one, you are finally free.