Coffee date

I’m a 21-year-old college student, and I’ve never been on a date or spent time one-on-one with a woman before. I’m meeting an acquaintance for coffee tomorrow, but I’m unsure how she sees it. I get the impression she might only think of me as a friend—and possibly isn’t that interested in meeting up, since she’s postponed a few times and only agreed after I kept rescheduling.

That said, I feel like we’d get along well and I’d like to get to know her better. Would it be a good idea to ask her on a proper date if things go well? Also, what’s the general etiquette for something like this? I’d like to offer to pay for her coffee, but I’m not sure if that would come across as too much.