I'm going to keep on headphones (without music) and not want to inquire further about my co-worker's stress and clearly audible sniffling.
Can you keep this up? I'm sure you can.
It's a habit of mine, if the co worker wants to talk, she has to first initiate a conversation first.
That's a good idea, you have to worry about doing your work and nothing else. The drama will just distract you and make you feel as bad a she does.
I think she will work harder if I ignore her, I can't force someone to talk.
It's fair to only want to worry about work and not coworkers.