This link is to Sally's and has a picture of a very similar porcupine (boar) brush at a great price. I've always purchased the German made one, a Sporenett because my mom said to. I'm sure Walmart, Target or other stores would have a similar brush too.
I do think this one would work for her, it's gentle and shines and smooths hair.
Your dd is adorable, a few inches off is where I'd start.
http://www.sallybeauty.com/Cushion-Brush/SBS-217508,default,pd.html