C: 「そんなわけないだろ」(You don't know about these.<imp:You don't know where they are or if after: You honestly don't know where they came from or what they were doing in your shirt.>) Y:「hahaha…;」 C:「まだ足りない」(This isn't enough.<imp:we're still missing more than just these>) Y:「残りはホント、もう無くて…」(really, I don't have the rest) C:「…then I've got no choice.」 Y:「uh、wai、waitwaitwait!」
I should mention that I don't know if this dialog takes place before or after what we see here.
translation: ___ 'Cloud: "Like hell it would!" Yuffie: "Hahaha... (sweat)" C: "That's not good enough." Y: "There really aren't any more, though..." C: "Guess I have no choice, huh?" Y: "Hey, wha-! J-j-j-just hold on a sec-!" ...or something like that.' ___ I think it's supposed to take place before, and during.