D.G.
Mine midddle son didn't want to walk either. I was told there really wasn't anything to worry about unless he wasn't walking by 18 months. He finally started around 16 1/2 months, he just decided one day he was going to do it, and he did. But, go with your gut. If something tells you something is not right, go with that. Everything is probably fine, but it won't hurt to get her evaluated.