Ive saw her last week after almost a year. She invited me to a gig on a bar. We werent talking too much, almost 0 comfort.

But she had to leave and I went out with her. We smoked a joint, have a lot of laughs and talking. She would knock my chest or the palm of her hand agaisnt my chest when laughing. I could even say there was probably a moment I couldve went for the kiss.

Next day I dont spoke to her. She left me a msg on FB telling me "hey did someone kill you? lol".
I asked her out a couple of days later and she told me "Im sorry I cant " Havent do it again since then.
Weird thing is she had to tell me something that happened to her some days ago and she said "If someday we see each other again Ill tell you about it" but at the end she just told me everything by FB.

We dont talk too much by FB. I barely talk to her or she does with me. And when we do, conversations have start to fade and they feel kinda not going anywhere. Not sure if I should stay or should I go? any ideas?

If you have her # text her instead of FB. Invite her to tag along with you somewhere sometime. If she rejects again, next.

You didn't escalate when you could have. If you can go for the kiss - always go for the kiss.

If she's local - then there's no harm in giving it a week and flat out asking her if she wants to grab a beer. If she says no again, without giving any details or saying something like "I can't but maybe next week", then yeah - back burner.

Well I asked her out to have some beers, she accepted but I fall asleep and I didnt see her haha.. should I go next or try to do it again?

Try again. Unless she's mad at you flaking you are in a good spot now that you are seen as more in demand. Her mind is possibly racing with what you were doing when you flaked.