Dude, Crowley also lost a lot of blood - he was caught in the Iron Maiden thing. I don't think he's got very much to spare. =P And anyway, Kanda didn't pass through Road's door; she confirmed that, and the room has been downloaded. Kanda is definitely stuck somewhere else.
Road might also be dead... how can she stop Tiki? Anyway, Rinari doesn't *really* need training. Allen only needed it to get his arm back, not because he's in bad shape, and Rinari has been walking around since then. She doesn't have any problems with her Innocence and never has, until now (unlike Allen, who apparently knew nothing of his, and that's why he had trouble).