My separation agreement calls for me to make a Child Support payment to my STBX, and for us to split extracurricular expenses and unreimbursed medical expenses. I am responsible for 2/3 of the extra expenses, and I incur most of the expenses. For the past 10 months, I’ve been compiling all of this every month, documenting everything in a spreadsheet, and calculating how much I owe her, which is always less than the amount of the Child Support payment.
Now she is demanding that I pay her one check for the Child Support and that we handle the other expenses in a separate calculation and separate check. Is this any legal requirement for me to do this?