Just a suggestion, if you'd like to go in a different direction for a memorial gift: Check out Slightly Different Nursery. Paul Owen has a name-a-daylily program, with plants that he has bred (and his daylilies are GORGEOUS -- almost as beautiful as his personality and spirit). He was so incredibly helpful to me when my siblings and I wanted to name a daylily after my father, AND get it into his garden so it could bloom in time for him to see it before he passed away. The daylily we chose was planted in my father's garden, and also in all his children's gardens. We all just love going out in the morning to see whether "Dad" is blooming today.
Otherwise, I hope you're successful in finding 'Emily's Fiery Horse' -- it's a lovely thoughtful idea.
