maybe by this time, you already have an answer.
I just wanted to tell you that since you filed as head of household, they will consider only your income. Iam 36 years old , 2 kids , Iam divorced now but at the time I was applying for financial aid , I was separated and filled as head of household. They didn't ask my husband tax. And I was qualified for any grants the government could have.even my state grants too. So do not worry about your situation.There are lot of help out there for people like us. Be blessed.