Tell her it wasn't her fault, and that Annie, young as she was, learned all about love while she was there. Someday she will see her again at The Rainbow Bridge, full of exuberance and joy, there she is whole and healed, and in no pain. Tell her that maybe a little child who always wanted a doggie but died needed an angel doggie friend, and that child and Annie will play at The Rainbow Bridge until your friend meets them there.