Why does I think she's very important? Maybe it's to do with the fact that she's a word by herself (e.g. "I" the pronoun). A is likely humbler because she's so clumsy.
What happens when they spell numbers like "Five" even though there's nothing to bring the parts with the same numbers? Probably symbols of the numbers or stuff, I don't know.
Or the blocks from Numberblocks. Think about it, if the Alphablocks make the word "Seven" even though there's nothing to bring the parts with the same numbers come to life, maybe Seven from Numberblocks will appear.