I know you can't make someone like you, but...?

In my school we have an option to join the chorus or not. I decided I would give chorus a try. In chorus we have folder partners based on our height and voice. I stand next to this girl named Llona. at first we never talked or anything then we talked a little and lately we've been talking alot and we get along great. Well I've been planning to go to a private HighSchool far away from my town and my friend Jackie got really upset so we had this bet, Jackie said she could find more people who would miss me if I left than I could find people who wouldn't miss me. We were tied for points at play practice and the last person to ask was Llona. Llona had been busy on stage because she was the title character. Since the pla was double casted Llona got switched out halfway through so the other girl could practice. Jackie asked her if she would miss me when I left and she said no!? I'm really sad, but she doesn't know what she did wrong. What do Ido, I really won't feel better without an apology