I remembered the de-aging thing, I didn't realize this was Storm taken from that point. I had thought maybe, but I didn't remember her being young for very long. It was around the time of the X-Tinction Agenda crossover, right?
Hell I even used that plot as a way to introduce a werecat Storm who would embody Cockrum's original concept of the character as a feline shifter. I just had forgotten Storm had stayed de-aged for any length of time.