I'm confused by a girls mixed signal?

So, for context: I've been stonewalling (for reasons) and I find myself in a city I've learnt to like and be ok with. I am getting better and I think I want to move.

This girl visits my workplace for a few days, and when I first saw her I got excited. She looked beautiful. But, I stonewalled for the first two days. Then I made an effort to speak to her, and it turns how we connected quite quickly and had things in common. It was quite quick how we connected which tells me its a good thing.

We spend time together, and over that time she shows very obvious signs of interest. But, she has a boyfriend. She has a boyfriend and I caught wind he wasn't showing up enough in the relationship. Still, I keep my guard down and get to know her more while being respectful of her relationship.

She shared personal details about herself, took interest in who I am, did silly things with me, flirted sexually, and imitated/mirrored me. She did other things too.

Then when the last day comes and I wonder/hope we exchange contact info, she spends the day mirroring me and catching my eye and then simply says goodbye. I tried to avoid saying goodbye directly, but she makes a point of saying ''My name'? goodbye.'

Now a month or more later I'm still agonising over it. It was so clear but she drops contact completely. What I want to do is change my life for the better in hopes of seeing her again. But I wonder, what was her intention here?

An important bit of information: her dad died when she was 16, and I was stonewalling because my dad died recently. She saw that in me.

So, what does this all mean? Was she just helping me out of a rut? Or does she intend to come back into my life?

It was a huge mixed signal in that she showed strong interest, and then pulled away completely.

Updates
8 mo
I am changing my life*
Updates
8 mo
I feel like a marked man
I'm confused by a girls mixed signal?
Post Opinion