Deciphering preschool-ese

As a mother of two small children, I spend a vast amount of my day trying to figure out what said children are trying to, well, say. Baby-talk, toddler-speak, preschool-ese. Sometimes I feel as if my job title should be:

Mother: cleaner of spilled food/drink, finder of lost toys/blankies/loveys, maker of mass quantities of mac-n-cheese, and interpreter of highly difficult and ever-changing coded languages.

Being 1, Charlotte is clearly the more difficult to understand. The child is almost 14 months old, but says very few words. And, when she does say a word, she, almost as quickly, stops saying it. I've heard this is normal, but it is also quite annoying. It leaves me saying, "Do you want a Nana? Nana? Charlotte, do you want a Nana? Nana?" over and over again because at one point, she did say the word 'Nana' in regard to a banana. In return, Charlotte stares and me and squeals, "eh, eh." If anyone else is around, I try desperately to explain that "Charlotte really has said 'nana,' I swear it." Meanwhile, Charlotte, in what I'm sure is a perfectly timed effort to prove me wrong, throws herself on the floor, tears flowing, and points at the fruit basket because all she wants is to eat that damn banana.

Give.   Me.   Banana.