Character's Ages?

As some of Ты may know, I'm Письмо a crossover FF with the Барби movie characters and The Host. I need to know these Барби Фильмы character's approximate ages (from the time they appeared in thier movie):
Clara and Eric
Rapunzel
Odette and Daniel
Dominick
Elina and Linden
Annika and Aidan
Genevieve and Derek
Antonio
Mariposa and Carlos
Liana, Alexa, Ian and Jeremy
Eden (and an estimate of what Frederic's age should be)
Viveca, Renee, and Aramina

Also, I have a book that says Anneliese and Erika are seventeen. Does that sound right? And then there's Julian. сойка, джей says that he's at least in his twenties, so we've guessed about twenty-one. Does that sound alright. сойка, джей also thinks that Dominick is older than Erika, but younger than Julian, sound ok?