Unfinished

Child brought home a half-finished sketch last night, copied from a magazine clipping.
A: "mum, do you think there is anything I could have done to improve my jungle picture?"
M: "I thought you'd only half finished it"
A: "yeah, I'm not allowed to keep working on it at home"
M: "so why ask that if you're not even close to finishing?"
I found it quite odd.