Giving her opinions and really challenging mine a sign of her interest?
Most Helpful Girl
Well, I will challenge a guy that I'm interested in as a way to keep the conversation going. I will also challenge a guy I'm not interested in dating just because the conversation itself is intriguing. The only clear message is if I'm not willing to disagree verbally when what I'm thinking is that I disagree - that means I either don't think you're capable of a reasoned debate (if I've heard you resort to personal attacks or just repeating yourself more loudly - that kind of thing) or that I just don't want to be bothered with you.
I think you should take it as a sign of interest.2