It starts off with a child to mature adult AP, to a old Clone-TF/AP to a proper AP/AR with teen to child.
While I have seen bits of it shown here, the full scene hasn't been shown to my knowledge.
The scene itself starts @8:20 of the first video, and lasts the first two minutes of the second.
Except the last where she ARs @ 1:30, its all poofs.
The opening (which is in pretty much the entire season's abridged seeing how its an OVA) shows an young adult AP of her @ 0:28 and Guu with a semi-AP (its more her subconscious given form) @ 0:39