Well, yes, the comb is a DQ. That's referred to as a "sunken leader". However, if she's exceptional in other ways, it might be worth pairing her with a cock of stron comb to see if you can get any good stock out of her. If you have other females that are her equal or better but don't have the sunken leader, then I'd put her in the pot. In the future you can watch for sunken leader early on and cull out then, if you'd rather.
Best,
Joseph