her dream was about seto going to college and leaving her forever:
"don't eat that textbook, we're in public y'know? you'll swell up like a balloon" - stop studying so much while we're hanging out, i'm scared that your brain will get too big.
"c'mon, let's play. let's do somethin' fun. if you get any bigger...you'll fly away, y'know?" - i'm trying to distract you and have fun with you because if i don't you'll go to college and leave me here. alone.
"i won't do bad things anymore, okay?" - i'll do whatever it takes to keep you, even if it means i have to stop flirting.
i doubt she'll stop flirting (i hope she doesn't stop flirting), but i think it really goes to show how far she's willing to go to keep seto in her life. <3