to be different , she switched to roller skates , white with silver laces , back again with her same-age little italian , german , jewish and hispanic friends , skating this time up and down every single concrete driveway in a weird smoothened end mixture of unionville and gahanna that she 'd produced full-blown from her head , that was wilder and freer and more infinitely open than anyplace she 'd ever seen before in her real and limited existence .