It's not recommended to breed blood related pairs.
As we have seen with other animals that we keep, down the line inbreeding leads to weaker animals and a lot of disease and health issues.
Better to mix things up as much as possible and keep these strains strong. There is really no value in creating potentially compromised animals.
I am hoping you have two enclosures for them as, aside from breeding, they really don't want to be together and each need their own space.