I recently sent in photos to get my female Yorkshi...

I recently sent in photos to get my female Yorkshire terrier CKC registered. She was denied for reasons that were not made clear on her papers that they sent back...now my question is if her mom is CKC registered and I just had her dad CKC registered this month how in the world can she not be able to get registered through CKC! I understand that a measurement might not be exact to your standards for the breed but that in no way means that she is not purebred and it seems that if her parents are registered with you then why on earth can she not be. It seems that CKC picks and chooses who they want to be registered. You register mixed breeds but not purebred dogs, what a joke! I will be contacting CKC Monday and ordering a DNA test for my girl. If y'all evaluate dogs to match their ( ideal breed standards) then how in the world can you register mixed breeds?