What do you think going on here?

Kind of at a loss for words here… maybe I shouldn’t be. Just not used to this type of behavior.
So I asked this chick out from work she told me well she has a boyfriend right now but she’s been unhappy and she’s working on leaving, would love too but not the type to cheat. Which is fine I wouldn’t want her to cheat either. I look at this girl as someone I would want to settle down with.
Anyways…. Few days pass and she’s smiling at me and initiates convo a little bit of flirting going on and told me she’s looking for a new car/apartment (progress on ditching the boy I took it) we flirt a little bit as the night goes on but keep our distance for the most part.
Next day, it seemed like she was trying to avoid eye contact, but her friend came up to me later in the night and told me “whatever you’re doing with ## it’s working! She wants to look at you, she likes you. Don’t give up on her, she’s unhappy with her boy” etc all of this stuff. After she told me that they met up with each other in the bathroom so it seemed planned… later that night I happen to run into her and we spent the last 20 mins at work talking to each other and she was acting SMITTEN. She was blushing a lot and told me it’s because she has a crush on me. She was asking me a lot of personal questions, and qualifying herself to me. Even asking if I want kids/ marriage in the future and just life goals I guess. She seemed really excited and even made a comment while another co worker was around that “love was in the air” I was a little embarrassed. It felt like we really connected that night. I felt so certain. When I got home I was thinking to myself if I really like her that much because I didn’t want to break her heart( LMAO, if I only knew better).
The next day comes and I happen to run into her and I initiate a little convo, not as serious as it was the night before more fun, but still a little flirting here and there and it ended up with her getting excited and sighing in relief when she asked how old I was, because she thought I was younger. I saw her again at the end of the night and she was a little flirty banter back and fourth, and when I left I looked back and her face was all lit up smiling to herself.
Now keep in mind I’ve just reciprocated interest and trying to take it slow because I know if we did actually get together it wouldn’t be for awhile… I didn’t validate her too much or over pursue. She was the one who asked most of the questions and was showing extremely high interest in just a matter of a week. I felt I showed her appropriate interest given her currrnt situation with the boyfriend….
So this is where it all starts to go downhill…..
literally the next day after this she leaves early from work (thurs) , we exchanged a few smiles and all seemed pretty good, still kind of weird for someone who is “unhappy” and trying to leave the boy. Now it’s Friday and maybe I was in my head but she started avoiding me as well. I walked by her and gave her a little eye brow raise and she was all shy looked down immediately and said hi. After this she’sstarting avoiding me. She initiated a how’s it going, hanging in there? After a few days And I played it cool made a joke and kept it moving. The next day I was working closely & said hi. She was telling me she’s been having bad racing thoughts… I just said if she wants to talk about it I’m a good listener, and she said “I’ll remember that” she was all smiley to herself as I was walking away … since this we haven’t talked at all not 1 word. It’s been a week now. It s weird because we work closely at times and we’ll just sit there in silence until one of us leaves.
I noticed she’s been talking a lot to her best guy friend at work. I’m not too worried about him tbh. She seems likes she’s been in a good mood the last couple days but still avoiding me. This behavior has me taken back because she seems liek a really sweet/shy girl. Kind of a people pleaser from what I noticed. Do you think maybes she’s just really stressed and got a lot going on with the boy and all? She is kind of dependent on him from what I know.. weird. I think he just sits in the house and plays video games 24/7. Something is very wrong with their relationship, they’ve been together for 8 yrs, and no marriage/ kids. And I know this is a big deal for her. The other day she was crying at work, but I didn’t say nothing as she has been pretty much avoiding me. Idk what else is going on she seems pretty respectable and keeps her cards close to her… I’ve just been playing it cool on the outside, but as the night goes on at work it eats at me. It seemed like we were really just starting to connect, and now it feels like we are total strangers again 😞 Thoughts??