Yeah, sometimes you just have people that may be focusing too much on their mind to actually notice that they are high. "Am I high?" "I don't think I'm high yet." "I can't feel anything yet." "Am I still straight? Normal? I don't know!" "Damn this is disappointing, not high at all." It's kind of bothersome.. but I don't know man. I would ask your friend if she is focusing on what's going on in her mind too much, or if she is simply not paying attention to what's going on, and waiting patiently for her high to take hold. I dunno man, that's odd.