Hey, I think you guys did exactly the right thing. I don't think there's any such thing as girl range. Most of the babies of either gender ever conceived were from sperm in the repro tract prior to ovulation because that's how the system is designed.
Don't worry about the way the CM seemed to dry up...that seems to be quite common - we get a big rush of CM a few days before O just to get everything ready to go (remember, through most of human history, we didn't shower every day so our body thinks that CM is going to stay where it belongs.). There's still CM up inside where it needs to be.