If you do go over tonight, "think" before you talk to her, don't bait her as Bill3 has pointed out.

Walk in and notice her, tell her she looks nice, ask her how nursing school is going, show interest in that.

My daughter liked this boy in High School, he would call her and one time she came to me and said, "mom, I don't know what to do, this guy doesn't talk". I had her make a list of things she could ask him ahead of time so that when he got quiet she had something to ask him. You know what? He NEVER forgot that and for years makes sure to call her on her birthday and be the first person (just after the stroke of midnight). He never forgot how she made him feel when she took the time to help him learn how to talk.

Now, if you ask her about how things are going with nursing school, if she says "what do you care" don't allow that to turn into an argument, head that off by saying, "I think it's awesome you are taking up nursing, that must be hard to learn, don't know if I could do that as good as you".

No ordering her is a rule, and do not say anything about not wanting to start and argument either, learn to steer away from that and move towards engaging in more positive ways. I miss your cooking, always thought you were a good cook, anything you can find to say that's a positive.