Ms. Valenti was a former Beauty Pageant Queen, as well as the owner of a beauty store called Elysian Beauty Store.
However, in reality, she was also a witch, and the source of her power and life-force was a gold-framed hand mirror called the Mystical Mirror.
Ms. Valenti stayed young and beautiful for possibly centuries through a combination of magic and murder: first, she would find a way to have her victim gaze into the Mystical Mirror, which would hypnotize and entrance her to drink a special potion that would transform her into a dog. Once she has successfully ensnared three victims, Ms. Valenti would have a sacrificial ritual: killing the dogs, and possibly eating their tongues and drink their blood, which would enable her to gain their youth and preserve her beauty. Hence, her preferred victim was usually a beautiful young girl.
She had three employees: Tannis, Vicki, and Laurel. Not much was known about her relationship with Tannis, however, as seen in the beginning of the episode, Ms. Valenti eventually found a way to convince her to gaze into the Mystical Mirror and entranced her to drink the potion that turned her into a dog. She captured her and locked her up in a cage, and lied to her staff saying she quit her job and ran away from home.
Soon she took a shine to Cindy, and shows her that she can be beautiful too. When Cindy sees her talking to a mirror, she gets freaked out and suspicious. Later that night she first tempts Vicki with nice new clothes and a pretty pink flowered hat. Vicki gazed into her mystical mirror to see how pretty she was and became entranced. Ms. Valenti then gave her the potion and she drank it, Soon Vicki screamed at the top of her lungs in pain and was transformed into a dog.
When Cindy and Laurel go to her shop, Cindy realized her house doesn't have mirrors. When Cindy goes to the bathroom she takes out the compact mirror. The she noticed the black and white picture of the hooded women who resembles Ms.Valenti has aged terribly. However this can only seen this when looking at it's reflection in a mirror.
Soon the secret got out to Cindy, that Ms. Valenti was really a witch living for centuries. Her reflection doesn't age because mirrors reveal the truth. After she placed Laurel in a trance, she got her drink the same kind of potion. Cindy burst in and she snaps Laurel out of her trance. Then the two young ladies run into the woods. Then in no time at all Laurel starts to turn into a dog. Ms. Valenti captures her and places her in a cage next to Vicki and Tannis.
Next Ms. Valenti was about to perform a ritual ,getting ready to sacrifice them. saying she's found her thee beauties, and with three tongues of dog that spoke as beautifully as women did, their beauty will live in her forever. Possibly she will eat their tongues or drink their blood after killing them; how it's done is not explained.
Cindy interrupts the ritual, and grabs the mystical mirror. She threatens to smash her mirror if they're weren't all freed and changed back to normal. Ms. Valenti tried to put Cindy under her power and convince her to look at the mirror. She keeps telling her come on there must be something you want, tell me what do you really want?
Cindy pretends to look at the mirror saying what I want. what I want. Then she gets mad and starts to act normal and says "my friend back". Immediately After Cindy smashed the mystical mirror. Ms. Valenti screamed at the top of her lungs saying a long NO!! and her real age rapidly catches up with her. Therefore she rapidly began aging away. First to an elderly woman, then died of old age. Then she turned into a skeleton, and then she turned to dust. Then that was the end of Ms. Valenti.