i'm in this situation where I haven't texted this girl in my class for 2 days.. the last message was something about yoga..

me: problem is i've been sitting here with my legs crossed for an entire hour.. am I doing it right?
her: hahahahahahahaha if u feel hard then its rite
her: hahahaha

we went out today in a big group (about 20 people).. there wasn't much of a chance to talk to her anyway.. i mean she's korean and mix with like these 3 other korean girls from our class.. anyway, she kept looking my way a few times.. I plan on keeping her interested to ask her out again.. we went out once before with her friend and my 2 other friends.. it didn't go so well as it was quite awkward though.. am i doing this right?

You're overanalyzing, just ask her out. The worst that can happen is she will gracefully tell you she is busy or some other excuse. It won't be awkward, won't hurt your feelings, and won't make you feel like shit. If anything, you'll feel more confident for having balls.