Full Idea
"Who Mummy love?" is recognizably baby talk; but "love Mummy who?" is not.
Gist of Idea
Babies talk in consistent patterns
Source
Jerry A. Fodor (In a Critical Condition [2000], Ch.14)
Book Reference
Fodor,Jerry A.: 'In Critical Condition' [MIT 2000], p.165
A Reaction
Not convincing. If she is embracing Daddy, and asking baby, she might get the answer "Daddy", after a bit of coaxing. Who knows what babies up the Amazon respond to?