It all depends on when she was supposed to have her period. if she was supposed to have her period the next week, and now she's 2 weeks late, she might just be having a late period and might not be pregnant. From what you said she seems to be kinda sketchya bout it. If I were you, I'd be there for her and tell her to take the pregnancy test so you can see the results (cause you want to be apart of the experience). When you see the results...you'll know the truth. It might sounds kinda mena to pretend like that or whatever, but it;s better to know the truth.