It was already said to keep your distance in a respectful way. Ignoring and flirting would both overstep her boundaries she clearly stated to you ( "Hey. It was nice you are interested in me, but now it is getting very uncomfortable. I decided for someone else and that worked out, and I have no further interest in you whatsoever. I hope this doesn't effect our work relationship in a bad way though.").
It is getting frustrating for me to reply to your replies.
I hope you can take a break from all of this in the weekend, get some fresh air and into the nature to get grounded. You have enough information already to draw conclusions, now you can introspect and learn from it or directly continue to pursue this or any other women and repeat this pattern.