I can understand the confusion here, as the runners companion allows players to choose the latent Dracoform quality allowing a metahuman to evolve/awaken into a drake.
This may have something to do with an important mataplot thread for Earthdawn where Aardelea, an inocent young girl became 'fused' with the Spirit of a dragon that inhabited an ancient book (the book containing rites and ritual information on drake creation) as the book was in such poor condition and not far from falling apart the spirit chose to preserve the information in the girl before the book fell apart and the information got lost forever. Due to this girl/spirit bonding she somehow ended up being a Drake/Human hybrid.
The dragons, especially Icewing AKA Dollmaker (possably Ghostwalker), were hoping to use her to create a new improved Drake, one that was born not create yet still loyal to their dragon master. Maybe they did succeed and that drake gene staide dormant until magic was high enough to awaken it.