Bernadette eventually fights to keep her, and Penny declines the rival offer, though Bernadette secretly keeps a napkin with Danny's high-salary offer hidden from Penny. The "Guinea Pig" Day
Sheldon and Amy use the children to test cognitive and motor skills, much to Howard's amusement and Leonard's distress. [S12E17] The Conference Valuation
It is revealed that Amy intentionally brought the book to spark Sheldon's interest in having their own children—a plan that seemingly works as Sheldon begins discussing the logistics of having triplets or quintuplets. Bernadette eventually fights to keep her, and Penny
Penny and Bernadette travel to San Diego to promote a new drug. Penny, thriving in her role as a sales lead, catches the attention of Danny, a representative from a rival company that Bernadette despises. Bernadette eventually fights to keep her