I had a thought that I couldn't get out of my head. What if the first thing Jessica did upon finding out about being a genie was made this wish "I wish that without changing the past, that Valerie Pearce (her rival) was the genie instead of me but still bound to this ring." What if after that she made a wish about knowing all possible timelines involving her wishes (trying to make sure that she doesn't make a wish that ruins things) and ends up finding out what each person who could have gotten the ring would have done. So she decides to get revenge. Maybe on one maybe on a few or maybe on everyone. I just kind of want her to see what could have happened and get some vengeance. An alternate idea I had if you would prefer is for the person that ends up with the ring be magical in some way themselves prior to getting the ring. Maybe a Wizard/witch/warlock who has powers of their own or any other thing maybe they are just psychic.
