Are You Annoyed By The Ambiquity Of 'Thing' In This Post? :D

So... the thing that has been taking up a lot of my spare time for the past month or so, is finally finished. Done. Over with. And I'm pretty sure it doesn't need revising.

This morning after SMSing the person I did the thing for... taking care of what she owes back to me because of this thing. A few minutes later, she called, saying she miscalculated in what she owes, and needs to get back to me.

Ah well. Worst case scenario, the thing done will not be returned with an equal favor. But not everything's about taking and giving equally, is it? I can't even be upset about it, because there's nothing I can do...