Unless she's het for something else, unfortunately I'd say "nothing". The best you can hope for are more Snow Motleys and they're pretty common.
If by "worth selling" you mean "would turn a profit", then I sadly fear you're entering a market that's going through the same tough times as every other business. Corns have become increasingly difficult to sell over the last couple of years.
The risk is that you might end up with 15 extra mouths to feed, indefinitely. I still have four left from last year - Caramel Motleys and a Butter Motley, so worth maybe a bit more than a Snow Motley but not by much. They long ago ate their way through any money I could eventually make if I found a buyer.