Well, it looks like from a previous posting that you live near Winchester, VA. The two closest resorts to that area are Bryce and Whitetail (where I teach). Both offer instruction to children under 8, but do not allow kids that age in regular group lessons.
I definitely don't want her first attempt at skiing to be a terrible experience.
This is why those resorts don't accept kids under 8 in regular ski lessons. They also want successful first time ski experiences. Bryce offers a kinder school product. Whitetail offer a kids mountain camp product. Whitetail just expanded the capacity of the kids camp program this year and we're still selling out on busy days. Whitetail and Bryce must know a little something about how to be successful. But the national average for a successful first day (as measured by skiing at least 3 days the following season) is around 15%. There is a legitimate reason for trying to up those odds of success.
One way to increase the odds is a private lesson. Both resorts accept 5 yos in private lessons. Both resorts accept parents in the same lesson with the child. Whitetail even has a parent/child lesson product called "Ski with Me" where the first half of the lesson is spent teaching the child and the second half is spent teaching the parent how to teach the child.
If you insist on the DIY option, the standard routine we use for first time children starts with making sure the equipment is right (e.g. boots buckled tight, no pants tucked in the boots), a bunch of walking around drills mimicking skiing movements (e.g. wedge position, side steps, walking circles, hopping, turning around, etc - anything will do), one ski drills (try doing the same drills as walking around) and two ski drills (again the same as walking around, plus shuffling feet, a straight run down a short 10-20 foot stretch and turns left and right). If your child is athletic and has the right gear (shaped skis with a short radius sidecut) and you have the slope space available you can choose to start your child with parallel turns instead of the standard wedge turn progression. There are additional special drills for that (e.g. one ski skiing and dragging the heel of the free foot). During all these drills you will need to identify and correct problems, offer praise for success at the right times and make things fun by turning drills into games. O yeah and you also need to mix in some break and play time with the learning time.
We often see parents doing DIY teaching of children. Some are successful. Some aren't. I've personally witnessed a dad DIY teaching his 9 month and seen the amazing results of his teaching skills in his older 2 and 4 yo children. I've also seen some kids that need a super star instructor to be successfully taught to ski. If you observe instructors teaching children to ski, the process looks simple enough. If you've taught to children to ski and seen excellent children's instructors at work, the process seems more like magic. Your mileage may vary.