It turned out that, at least when it came to wings, Rainbow was much more knowledgeable than Gabe. Apparently, nopony had ever bothered to teach him about them. She carefully inspected the limb, preened out the bad feathers, and after a while of moving it this way and that and asking Gabe if it hurt (she told him not to play it down, just to make sure,) Rainbow announced, somewhat surprised, that his wing had healed and the splint could go in the trash.