Oops, She's Not Mom!

I think I've mentioned Sly's mom is also Lilly's mom, and Lilly looks just like her. So I felt for the little guy when, several times today, Lilly suddenly walked into the room and the "Mom!" thought goes into Sly's little head and he makes a bee-line for her belly, rooting forcefully before realizing his mistake. Lilly just freezes with this confused look on her face.