my 5yr old dd cannot skip no matter how much she is taught
all the family and her school friends have tried to teach her how to but she still cannot do it 
when she was little we couldn't get boots to fit her ankles, i remember going to a shop and the shop assistant told us he's pretty sure wherever we go boots will not fit her ankles. we tried everywhere and he was right 
the only other problem with her walking is she regularly falls down, but other than that she seems fine.
Am i to be worried?
should i get her checked out?