@KATENESS You can always save right before a baby is born and then use MasterController to reroll the outcome of the pregnancy if you don't get a merbaby. The command on the pregnant sim is NRaas > MC > Basic > Baby > Reroll Genetic Seed Value (you need the MC Cheats add-on). If the mother is already in labor, clicking on her won't work, but you can still run the command from City Hall. I haven't played much with occults, but I've found that every characteristic the baby is born with can be changed by this reroll. And of course you can take the newborn into CAS to see whether the toddler or child version has mermaid scales; as long as you X out of CAS, no changes will be saved.
