I definitely don't know the specifics but wouldn't bet too much on her getting less if she pushed it. I was lucky enough in my D to get S7 and XW has to send us CS. I make twice her income and she still somehow has to use a third of her income for CS. Pretty steep...
M: 43 W: 43 Married 6 yrs. T: 7 yrs. Son 20, 18, 17, 15 yrs. (w/ Autism), 12, 10