Mommy has a name

The other day, Shawn and I were chatting and not paying attention to the people around us.  Our two-year-old was trying to get our attention:

Scarlett: Shasha.  (Pause) Shasha.  (Pause) Shasha.
Me, to Shawn: Is she trying to say my name?
Scarlett, nodding her head: Shasha.
Shawn, pointing at me:  No, that's Mommy.  You call her 'Mommy,' and what do you call me?
Scarlett:  Shawn.