Peridot

Background
Peridot (pronounced: Pari-doe) is the Daughter of The Lady of the Green Kirtle, from C.S. Lewis Chronicles of Narnia: The Silver Chair. Her mother is known to be a witch and a also resombles some traights from 'The Naga' from forein cultures. One traight in particular is that the Lady of the Green Kirtle can shapeshift from a vivacious woman into a large deadly snake at will. Paridot also has this ability. In the original literature, many beleive that The Lady of the Green Kirtle is a reserected Jadis (White Witch). Even though in the books Jadis is killed by Aslan, when the world of Narnia was created, Jadis ate an apple from the Tree of Youth, meaning that she can never die. Therefore, the Lady of the Green Kirtle is not the White Witch, due to the Jadis not even fully dying in the first place. Also TLGK (The Lady of the Green Kirtle) shows some mystical controls that Jadis doesn't have and vice-versa. Even still both Witches are 'Northern Witches'. Their paths most likely have crossed before, however they are not the same.

The Lady of the Green Kirtle holds (then) Prince Rillian, and placing a spell on his so he will forget his homeland of Narnia. Though, she couldn't erase his memory completely, so her spell gave his one hour a day, where he could remember his previous life (before he was captured). During this hour, TLGK locked him into a Silver Chair assuring that he wouldn't escape her lair. Then the rest of the book happens where Rillian escapes and whatever...