Hopefully this isn't "guessing" or "ruining" the mystery, but what do you think are the chances of Bonnie having an alternating block? I'm looking at the size of these + the amount and, unless we have pretty wide pieces sashing or these are on point, I am think that is what might be happening. I'm not a maths genius though. If that is the case, we probably have more little units to make; which supports Bonnie's statement that we will be using more aqua soon.
Sorry, just thinking out loud! Hopefully I'm not spoiling the fun for anyone. I don't want to be a party-pooper!