Hi, I'm hoping one of my fellower DISers can help me. My daughter needs tap shoes that will have to be ordered from the UK and I need help determining the size. They are Roch Valley brand, Dorothy style. Her usual size is a 6. She wears a 6 1/2 in the tap shoes that I found that look similar. The chart shows this as a UK4 and the place I'm ordering from said UK4. However, the Roch Valley website lists 5.5 for UK sizing. Anyone know if Roch Valley shoes tend to run small? Thanks!