I couldn't help but laugh at Monica's version of Twinkle, Twinkle, Little Star. Her "language" sounds like it could be a Native American chant or some kind of Oriental twist on the tune. I think she actually might be thinking she is speaking Spanish. She says "chica" in there at some point. She counts her numbers most often with "uno, cinco, seis, ocho, focho, cocho, wacho"...etc if it ends in 'acho' or 'ocho' she thinks it's a Spanish number! HEE HEE!
Whatever language she is speaking, Leah got a serious kick out of her big sister. You can see the awe and admiration already starting! "Oooh, Monica is bilingual. Maybe if I smile really big at her she'll teach me how to talk!"
P.S. That's Mozart Mouse she is dancing in front of Leah!