Nah man, she wouldn't care and besides like she'd find out anyway. She's not gonna care about you getting a yellow card on some internet forums. You should stop doubting yourself, the only way you can find out if she likes you in the same way is to talk to her and eventually ask her out. Trust me you gotta do it eventually before its too late because its happened to me before and I knew I would never see this girl again, I threw it away and so I don't want to see someone like you go through the same thing.