You ask good questions. Let's go through them together with the aim of understanding how it all ties with DBing...ok?
Is there anything else I can do to continue the positive interaction?
You're doing pretty good there. Your biggest problem is that you are looking for ways to bump into W thus drawing her into more talk. Let it be. There's no timeline. No urgent deadlines. If you look at the ocean, you'll see there's high and low tides. Ebb and flow. Same thing with interactions. Most especially after intense and emotional discussions like you had recently.
I saw her walking by Thursday evening as she was headed home. She looked up but I didn't really catch her eye. I texted: "I saw you!"
You are too eager to initiate any contact with W. Too eager. Too available. Let it be.
As a good DBer I'm not allowed to do temperature testing am I?
Let me ask you this. How do you think that temp checking would be helpful to YOU? What are the true underlying reasons for them?