5 mths: push herself backwards using arms
7 mths: lunges foward
9 mths: crawls proficiently
10 mths: pull to stand
11 mths: cruise
12 mths: Took first steps unaided (as of yesterday)
I dont think its necessary to teach her to crawl or walk. BUt of course you can entice her to move towards you with toys, or any interesting object.
Its true some babies skip the crawling process, some scoots, shuffling their bottom ( my baby loves doing this even now) dont worry and dont compare. Every child is unique.
My brother is always telling me, when your baby walks, thats when the real damage around your house starts!