Partners in crime

Lilly has a PAPPY (paci) in her crib. It's supposed to be used only at night, but she often runs up to her room and tries to reach it in the crib. Sometimes she succeeds. Sometimes she doesn't. She asks me for it and I always tell her NO! When I don't give in she immediately calls out Sophia's name to see if she'll cave and give her the PAPPY. Sophia thinks she's clever whenever she helps Lilly out with the paci.