All I want for Christmas

This morning Abby wrote a letter to Santa with no help from anyone. This is the result (translation following):

Satu
Ckanihav u baby uliv plys and brby hrt bblgum
ABBY

Here is the translation-

Santa (she confuses the 'a' and the 'u' sounds often)
Can I have a baby alive please and Barbie heart bubble gum
ABBY

Now do me a favor and check out her phonetic spelling and try to tell me that she is not the cutest and most brilliant thing ever.
But seriously, what is a Barbie heart?