I need a lot of help. she keeps going back and forth. she doesn't treat me the same, but she says she wants to go back to when we use to be closer?

i like this girl, and we work together. the problem is im not sure how she is feeling about me. i decided to walk away from her because of the increased attention she has been getting lately from other guys. she seems like a really friendly person and all the signs i could have seen as flirting could have been just her being friendly. so i backed up, i figured i would have seen a sign through the hangouts or just the talking, i wasn't sure that i have. i decided the way she has been acting towards me,(distant) im just going to keep it friendly for work. hi and bye, hug when appropriate thats all. she's been distant even before that, doesn't text or really snap me.
anyway she texted me once already randomly asking me why i wasn't really talking to hear and acting so weird. after we talked things went back to normal. but its now a few weeks later and it has dropped again. i see her doing that friendly crap with other guys she did with me. i should mention she's the type who would have a lot of male friends and friend zone them all. which i figured could also be me. but anyway, seen her yesterday and she just seemed civil like hi hug and went on our way. like i mentioned we work together so i seen her most of the day. she was happy and doing her friendly flirting crap with other guys. we didn't really acknowledge each other unless it was work related. on her way out she passed by me and i told her goodnight she said she will be back told her i wouldn't though. the moment she gets off of work she text me, asking why i dont talk to her anymore. i like the fact that she's surrounded by men and she still texting and upset with me. told her i dont see her going out of her talking to me. then i told her i could be brutally honest why if u like. she didn't respond. sent a snap question to me i responded, she opended it didn't respond.
what should i do?
Should i call her out?
what do u think is on her mind?
do u think she may feel the same?
I need a lot of help. she keeps going back and forth. she doesn't treat me the same, but she says she wants to go back to when we use to be closer?
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