Just that really. Consider some of the names her toys have - snowy, twilight, cuddles, pinky, clucky and other such delights and tell me I am not being unreasonable.
I have no problem with her contributing ideas - indeed the list currently includes
bubbles
Joanna (name of best friend at school)
Mrs X (name of her much loved reception teacher)
Granny (because it would be nice to call baby after MIL)
or simply Baby
But I am not sure she should have the final say!!