Update: XW sent me a nonsensical rant about how it was my responsibility to give her my preemptive agreement, since I was supposed to know she was going to pay for these expenses.
Several hours later she sent me a list of upcoming school fees and asked if I would be willing to split them.
Someone pinch me.
(Yes, I agreed.)
Me-47,XW-43 S13,S16 M:18 BD:4-23-17 W filed:7-17-17 (5 months of in-house separation hell) W moved out:1-6-18 D granted:2-15-18 Decree signed:3-29-18