Does Ashes have a plain white belly, or do you see some checks? If it is plain white, then Ashes is a motley. Ashes does seem to have the motley pattern on her neck, and not all motleys have that pattern their entire length. The belly will tell.
Here are my 3 ghost motleys - Ariel is an '03 hatchling, and both Autumn and Phantom are '04 hatchlings. (The '04 hatchling pics were taken either before or just after their first shed. Phantom has gone through 4 sheds now and is alot lighter/pinker. Autumn is a little lighter, but she's only shed twice.) I really need to get some updated pics.