wings clipping

I fell in love with cockatiels after meeting my friend's bird. She had completely cut this bird's tail, primaries, and secondaries. I read up on cockatiels, including this forum, and learned how wrong that can be. I convinced her to let her grow out the bird's feathers. However, we recently go...

Fate had just molted her already clippped wing feathers. How long should I wait before getting her wings clipped again if I should at all. Any response will be welcomed as I am fairly new at being an avian owner.