Open Question: She's being stupid and annoying and I can't do a thing about it.?

Jenny is labeled as the bimbo and also the prettiest in the whole 10th Grade girls' Sunday school class, and I'm pretty sure many guys like/have liked her. She's also been going to the church for her whole life. Whereas I've only been going for 8 months.She's never really liked me, because I have better language skills and wittier lines than she does, and I've proved to be competition... I'm not sure why, maybe it's because I sing for youth service and I pay attention to my fashion. Another thing is that I used to (...kinda) have a thing with Kate's (her best friend) crush. But I'm the kind of person where I don't have anything against anyone, but I'll act a little awkward around someone I know has something against me.Jenny and I never really got to know each other well, because I guess she just hated me and I was a little too chicken to confront her so I just kept out of her way. Recently, though, we had a Sunday school session where on a piece of paper, you write what you want to say to every person in the class. I decided to pick out my good impressions of Jenny and pen them down.Jenny wrote about me something about being sorry for being cold/mean to me, and I'm sure it was genuine. I thought things were taking a turn for the better, but...We went to Jenny's house to play Wii, the 10th Grade girls' and guy's class, and this guy Ryan was being annoying, continuously hitting me with the mic wire and wouldn't stop. I was quite pissed off, so after a million "Stop it omg!" I said "Ugh, you suck!" I did it rather jokingly, and I think I have quite a high pitched voice because I really don't like shouting. It makes me feel mean. Well, Jenny imitated my 'ugh, you suck!' and said, "You're totally flirting." I mean... wtf?! I wasn't flirting - AT ALL. I don't like him, NOT ONE BIT. He was just annoying me a lot.Another incident happend there too. John's the guy I have a crush on. We get along really well because we're both rather well-informed about celebrities and American Idol and stuff so we started rambling on and on about Idol. Jenny was cleaning up crumbs on the floor, and the napkin brushed against my foot so I looked, because I thought it was her dog. She smugly said, "Psh, you didn't even notice. You were too busy engrossed in your... conversation." and added in an undertone, "Go Elle! (my name)" in a fake-ish, encouraging way.I mean, am I not entitled to talk to a guy just because he's a guy? I have the feeling she thinks I'm a flirt, but from the previous scenarios, I really had no intent of flirting (well, maybe except for John but we were just talking, nothing more!) I don't know what to do. I mean, writing that she was sorry on that piece of paper was an attempt to reconcile, and I could tell she was trying to be nice to me that day except for those few moments where she let slip what she really wanted to say to me. I know she meant to reconcile, but sometimes the overwhelming, determined 'I'm going to be nice to her' feeling fades off after a while. What should I do?Your help is greatly appreciated - thanks for reading!