Okay, what next?

Well, Skrillex (Mametchi) and a Chantotchi named Sirah (from the Dating Show, who I named after the family member) married, and they became Mametchi and ChaMametchi's parents, PapaMametchi and Mamametchi. Then they gave birth to two babies who I have named Sonny and Scarlet...then after that Sonny and Scarlet became Mametchi and ChaMametchi.

Is there anything else I need to do to achieve the 3rd Generation? Or am I stuck with them until they die and I have to start all over?

I think you need to wait about 6 days to marry them at the Date Place

Okay. ^^ That gives me time. Thank you.