Someone sent me a link to a webarticle on AS, with the header 'Read This, It Sounds Like You' - and it did. A lot. Actually, a lot doesn't even describe it, I felt like someone had been secretly videotaping me and studying my life for years.
However, you don't live in her head, so if she says 'No, that's not me', don't make a thing of it, because if it isn't causing your friend serious problems in dealing with everyday life, then they don't need a disability label. I mean if the traits you think you see are not a handicap for her, then why do you feel she needs to be branded Autistic? Call it to her attention if you genuinely think you're helping, but once that's done, let it go. If she needs more information, she'll seek it out.