Help Please

This may seem like an odd, even crass request. We recently lost a fellow gardener. She died suddenly. She had worked for two days as an active volunteer in our group last week. We have known her a little more than a year. She was cheerful and enthusiastic, and now she is gone. Nobody saw it coming. I have been asked to write something in her memory. I am not comfortable writing something original to honor her life and service. I thought a poem would be nice, but I am at a loss to find something suitable. Anyone out there on the interweb know of a poem or quote that would honor a gardener who has passed on?