So going back to the original post she didn't manage as much of the track with the correct technique as she could doing it the way she did before what is wrong with that (unless the coach caused her to loose her confidence and that was the reason in which case it's just a bad coach)? If all she want's to do is have fun then a skills course might not be the best place for it as coaching serves to point out how wrong you have got it. Quite a few skills are counter intuitive hence will not feel natural (coming from being coached for motocross but it's the same principles for all coaching) hence when first tried it will not be as easy as what you are used to and you will need to practice those skills before you are as good as you were before, but you will then be able to elevate your riding to a higher level than before once you have learnt the "correct" technique. Coaching doesn't instantly make you better just like school the teacher shows you what to do then gets you to do it over and over (I think you need to repeat an action about 1000 times before it becomes natural) but it gives you the potential to be better.
If I've already lost you in that essay I'll summarise, coaching is the best way to get better but if you just want to have fun and your just starting to ride coaching might not be the best idea (I have never found it "fun"), if you want to be the next Steve peat you might as well get the correct techniques when you start riding as it's harder to undo old habits.
Iain