This is what I was trying to get at. You can explain this in the special circumstances section. Your household expenses mimic that of a family with four kids. I have no idea whether colleges will care. But you want to leave no stone unturned. A college that really wants your daughter to attend may be looking for reasons to give more FA to her.
As for the CSS, why don’t you just take a look at it yourself?
https://student.collegeboard.org/css-financial-aid-profile