I have a few concerns regarding my grandchild's crawling way. She just started crawling and I'm concerned that there is something wrong with her left leg. When she crawls her left leg is positioned like a sitting yoga position, but the right leg she uses correctly for crawling. When she crawls on her left leg it is actually her shin that she is using to crawl on. Should I be concerned. It's only been two weeks since she started crawling. Should I give her more time to get used to the art of crawling?