(continued from description) "She was literally the only person who was loving up on me and was so excited to finally see me after a little over a month. But recently, there was an incident. There's a talent show coming up at school. (Sounds fun, right?) One day she asked me, 'Hey, Theresa. The talent show's coming up really soon and I was wondering if you'd like to be in it with me.' Of course, I said yes. This was gonna be my first time being in the talent show. (There's one every year) We agreed on Elle King's 'Ex's and Ohs.' The next day I came over to her house to practice. Afterward, she invited me to her birthday party next weekend." (cont)

"Now here's where the problem really starts. I called her on a Saturday to ask her if she could come over to practice. That was a no. I tried again the next day. Still a no. That sounded really fishy to me. The next week was gonna be tryouts. And at last, the day came sooner than expected. The day before I said 'I'm definitely going to enter.' I thought she was gonna provide the music. I took my costume for tryouts. She didn't bring anything. Turns out she was being a flat-out jerk. She put me through all of that for nothing! >:( Now, guess what? She said 'It's your fault. You were the one who said you didn't want to do it!' I never said I didn't want to do it! :( Since then, she's been ignoring me. I don't know what to do. I did something nice for her, and this is what I get in return!? :'("

INSTRUCTIONS: Comment below with advice for @--Celtic_Lace--.

You were pretty close and with the blink of an eye, she completely change of attitude and try to ignore you? Something's IS wrong and even if the easiest solution for this seem to be "stop being her frien", it is not yet, believe me.
No relations with people are perfect; you can get angry after your best friend or lover, it's perfectly normal, where still human beings. It's when from the beginning to the end of the relation, all you do is fight over stuff that big solutions come in place.

If she changed her mood radically and ignores you out of nowhere, she's might be going through some big changes or challenges: it then ruins her mood and she tries to ignore because she don't want you to worry or care and/or she dosen't trust you/feel close enough to you to tell you about her problems.

Believe me, losing one her close friends is probably one of the last things she needs right now. I would suggest two solutions for this problem.

//sorry for the mistakes btw @-@

The first one is to just let her be for awhile; maybe she just needs some time and space to get through her problems.

Then, if after alot of time (like months and months), she still is trying to ignore you or if you really want everything to go back to normal as soon as possible, try asking her if you guys can talk because you know there's something wrong going on and when there's relstionship problems between two people, they need to get solved before its too late. If she still ignores you or she replies that she don't want to talk, try squeezing the lemon a little bit more just to see if she changes her mind but NOT TOO MUCH, if you feel like it's not working, it won't work.
If she accepts to talk to you, well awesome! When the discussion takes place, try asking her she acts like this, etc, and try to understand why she's acting like that and what you can do to help. DO NOT START ANY PROBLEMS OR ARGUMENTS, for example you can tell her you were upset and that's why you want to know

but do not try to make her feel bad about what she did (don't act like a b!tch, basically), that discussion is more like a moment you take to listen to her PROBLEMS and ISSUES.

SO, if she denied your offert to talk, like I said earlier, give her some time alone, she might become normal again after a while. If she dosen't though, then if you have for example a psychologist or someone like that at your school, try refering her to them by saying that your friend is acting weird and you're worried about her. If you don't have anyone like that, tell your parents so you know, maybe they could have a chat with your friend's parents OR even more simple but maybe a little harder, talk directly to someone you know who is related to her (brother, sister, parents).

I've had a friendship issue with one of my friend this year and it broke me in pieces, I can understand how you feel.

But the stuff I've learned from that is that you should never leave your friends behind so easily after all the time you've spend being her friend and ENJOYING it of course. Maybe you won't have a friend likebthat again so it's important to take care of them.

Plus, don't push her to tell you her problems, it just makes everything worse to endure (and that for her and for you).

I think that's it soooo I hope I was helpful and good luck! I'm sure you can save your friendship with her! :)