Just noticed that dd's shoes ('doodles' style plimsolls) have worn away a significant amount on the outer edges of both heels. She has only had them for a month. She has just turned 4 so I appreciate she has a lot more to do development wise, but I have never noticed this sort of wear in any of my other dc's shoes. Should I be worried and get it checked out or is this something that will change as she grows?