She's "not looking for anything"

So heres the screenshot. I get the vibe she had a bad breakup, OR im not gonna ignore the major possibility she was just being nice and isnt interested. For context, this is a girl i worked with a couple years back and recently found on Insta and hit up (was a bit of a pussy back then, big regret of mine is not talking to her more then although in fairness at the time she had a bf). Again its not Tinder so theres not that social contract, she never asked to talk to me and i dont want to be a dick and overstep because i hate when guys get pushy, but i do know like Alex says theres a difference between needy and persistent. Complete honesty my gut feeling here is to just take a knee, she's not interested which i completely understand and respect, and I feel like the best course of action is to let this one go, but i wanted a second opinion first.