Cute GD and dress looks good... she can wear it for a longer time :D
I understand about "kids" getting the right measurements. When my DGD was about 2, I was making her a coat. I needed her length from center back to knees/midcalf. My dd and sil made every excuse in the book as to why they couldn't get the measurement...everything from "she's asleep, to "can't find the tape measure". I finally just made it...it was too short and when they asked "why I made it so short?" I reminded them that I was begging for them to get her measurement.... It was still cute but, being so short, it didn't provide much warmth.