Girl seems to like me but sometimes takes forever to respond?

Anonymous

So this is a girl I work with actually. I'm gonna give the reasons why I think she likes me and I just need opinions.

When she asked for my snapchat a few months ago I forgot to add her back for about 3 hours and the next day my other coworker (who was like her gay best friend) told me that she was butthurt that I didn't add her back and called him to tell him about it

When we're at work together we talk all the time and tease each other constantly. For example, I have a slight southern accent and sometimes she'll mock it when I say something. She also constantly orbits me while I'm there too, if I go to the back room she follows me, if I'm up front she'll follow me there too. Hell, yesterday I was in the back room, walked towards the front a few steps and turned around to stay in the back room and sure enough she also made steps to the front and backtracked when she saw I was staying in the back. She also laughs at literally everything I say or do, sometimes way too hard. She's at the point where we'll make eye contact and she'll start laughing (maybe I'm just funny lookin)

Outside of work, she also displays signs of interest. Last week she went out three times, twice to a bar and once to a club all with her friends. All three times resulted in her drunk texting me out of the blue. One of the three times was after I had been left on opened (so it wasn't a response) and another time she texted me saying she wanted food (the text was so poorly misspelled that I wasn't able to decipher what she was asking till the next morning). She's also started copying the way I text and using some of my slang.

This is all great but sometimes she'll take forever to respond to me, she's pretty dry when she's busy which makes sense but like today she hasn't responded in over a day and this is the third time in a month she's taken this long.

I'm 99% sure I'm an idiot who's overthinking as I often do but I want some opinions

Updates
7 mo
I need to clarify something, I said this was the third time she's not responded in 24 hours "in a month"

We have only been actively texting eachother for about three weeks, so it isn't some big change in behavior it's just odd to me
Girl seems to like me but sometimes takes forever to respond?
5 Opinion