If anyone were to tell me I’m clingy, I’d immediately stop calling, texting, approaching, or any ‘push’-type interaction. If she talks to me, I’ll respond, even have a conversation, but otherwise I wouldn’t interact.
After a week, maybe two, I’ll test the waters with a ‘hi’ and light conversation, if she seems open I’d cautiously start getting back to normal. If she still seems like she’s not really keen to start back up, I’ll give it a month, try again, then let it go and move on.
What’s probably happening here is her friends are teasing her about having a boyfriend, forcing her to take action. You have no good moves here. If she wanted to be your girlfriend then you guys would already be doing that. The best you could hope for is to keep being her friend, but it sounds like you want more than that.