Like this girl but think I gave off wrong impression and not sure what to do?

i've seen her a couple times at this place where we both hang out and she works as a server but only during the summer.

i got the vibe that she liked me but she got annoyed with me one night a couple weeks ago cause i didn't go to a different bar afterwords that her and her friends went to that night. normally i go there too but didn't feel like going that week cause i was low on cash cause it wasn't a pay week and bar wasn't even busy that night anyways.

but i think that maybe she though that i didn't like her despite fact i specifically came over and talked to her that night at other spot.

and then oddly when i went to same bar the next week on night she normally goes out she was not even there.

i saw her at that place a couple nights ago and she liked smiled and made eye contact with me a lot but didn't come over but maybe she was annoyed i didn't come over to say hi , but i do like her.

to explain we first meet last summer there , i bought her a shot one night and we got along well that summer then i didn't see her again until this summer but seemed like she was happy to see me again and wanted to get to know me better

Like this girl but think I gave off wrong impression and not sure what to do?
Post Opinion