Or even perhaps her uncle? Perhaps the Sultan had another child after Jafar, who felt rigged of his birth right claim to the throne. Though that would put Jafar and Jasmine in a sort of Scar and Simba situation….
You didn’t watch WL, huh? đŸ˜‰ The Sultan had 2 sons, Jafar and his half brother. Jafar’s mother was a poor woman who died when he was a kid, and on her death bed she told him that his father was the Sultan, so he should go to the palace and he’d be looked after. The Sultan believed the Jafar was his kid, but refused to acknowledge him as his son and treated him like crap. The Sultan had another son, who lived in the palace and was his heir. The Sultan ended up drowning Jafar, and when he believed he was dead, he had his body tossed out with the trash. But Jafar wasn’t dead, and when he was all grown up, and all full of magic, he went back to the palace to confront his father. That’s when he kidnapped the Sultan and killed his half brother. So once Jafar was done, the Sultan and his heir were both gone. (Jafar kept his father locked in a cage until such time as he’d managed to collect the genies in order to change the laws of magic so he could FORCE his father to love him. After which he killed him.)
And I don’t think we were ever told who the new ruler of Agrabah ended up being, but I would assume it would have been a sibling of the former Sultan’s if one existed?