My daughter also 用腳尖行架! 有時重彎低身好似的亞伯行路. But, she has no experience seeing others walk like this. May be children in their age will walk in this way. Also, she will walk with hands at the back, just follow what Grandfather do.
If I ask her "How to walk?", then, she can walk properly. Just, need to remind her if 用腳尖行.