Im fed up with my so called best friend advice?

She doesn't seem like a good friend. I know what it's like to have a really annoying friend - we all have one. I just deal with it but if you can't, then try talking to her about it. Hopefully it won't cause an argument but if you want to stay friends, I think she needs to know how she's making you feel. You don't want her to be stupidly immature forever, I wouldn't stand it.