Yes, but don't the number of males/females that the breeder sent in have to match? I guess because I filled mine out and submitted for the new puppy owners, I never did online. But I do know I had to report the litter size and genders. If the breeder messed up and sent in wrong numbers, isn't that a problem?
But I see what you mean, if she only mailed wrong ones, the person with Dexter's papers (hopefully she just messed up those 2) can simply go online and do their paper and it will all even out.
First, I have to say that the breeder should do the responsible thing and get the papers straightened out, not just ignore the problem. Not a very responsible thing to do.
That said, since this is a less then responsible breeder, I would guess that most likely not all the pups would be registered anyway, as BYB could care less about that.
However, if by chance they are all registered, you are correct that the number of pups by sex are part of the litter record, so could be the last to be registered could really have a problem.
Another lesson, check your paperwork before you "pay" for the puppy