Hi, Matt,
My name is Stella, and I have an almost 9 month old IW/Dane mix, Strider. Considering the mix, it's kinda hard to say which is dominent in size, there isn't much height difference between a dane and an IW. The main difference is in thickness, I think. Strider is much lighter boned and less solid than my dane was at the same age. I'll find some pics to show the difference.
What is your gal's mix, and how old is she? All of that could make a difference in her final size. Load a picture when you get one,I'd love to see her.
OK Here is Merlin(dane) at 8 weeks, then Strider at 7 weeks, and Strider at 6 months.
Hope this helps you out
Stella