I would like to think that the mom is a YB and Daddy is Lessorbelly.
I would also like to think that Mom is a new morph that when bred to the Blue eyed complex (Lessor,Butter,Mojo) produces an animal similar to an Ivory.

Either way that is an awsome surprise to have.

My other thought since he stated it is not multiple males, and I believe it was mentioned above would be retained sperm. Do you know she was in fact a virgin, just asking not accusing.