If something is not to her liking, she simply says "It is too small..."
Let's put this in a sentence:
M: "Come on, Syd! Let's go bye bye!"
S: "Uhhh...No, I think it's too small."
or...
M: (sets food on her tray) "Here's lunch, sweets!"
S: "Ummm...No, I think it's too small."
or...
M: Do you want to watch {insert movie/tv show here}
S: "Ummm...No, I think it's too small."
