So I'm having an issue with the twins; I've definitely succeeded with Nikki and Lola, but they keep presenting me with the challenge with no option to show them I succeeded.
u need cumshot on lola to get the succeeded option.
Yeah, that option doesn't present itself. She gets fully transformed, and then the remaining dialogue is just "Hi Daddy! *giggles*" from then on.
You need to visit the twins at night after giving cumshot to Nikki