My grandaughter soon going to be18 months complete , and has never crawled on fours, and just started walkg leaving our hands, or chair, sofa, etc. 1) Yet her right foot goes sideways, not walking straight. She is v comfortable since a week walking with support- holding 1 hand/chair, sofa, etc 2) She is unable to stand up on her own from floor, only can stand if there is anythg to hold, stand up please advise thanks