"Oh, well, everyone has accidents," Tina says. She smiles at Leah. "Why don't you go clean up? While you're doing that, want me to make you a strawberry snack?"
When Tina says "strawberry", Leah's look of panic and distress melts away. She smiles, despite having poop in her pants. Good, the trigger to make her happy works.
Tina wants to gently push Leah into being a baby, so that she can gradually learn to enjoy it. However, she can't have Leah freaking out, otherwise the process will take forever. If it ever works. To make sure Leah enjoys her baby life, Tina decides to use a trigger for baby behaviors, then immediately after use the trigger for happiness, fun, or giggling. Once Leah subconsciously associates her baby behaviors with positive feelings, she'll do them on her own.
"That sounds great, Tina," Leah says. She heads for the bathroom. Tina whips up the strawberry snack for Leah, then, while she's waiting, looks at the list of triggers. When Leah returns, Tina plans to use one on her, then immediately make her happy. But what trigger to use...