The answer is…maybe. If your child applies to schools requiring the CSS Profile, yours will be the only parent income considered. When your former husband was alive, there are colleges using the Profile that require non-custodial parent information. That will no longer be the case.
Your $100,000 or so income and your assets will be used primarily to determine your child’s need based aid. Policies vary by college…so it’s not possible for us here to even speculate about your student’s aid. Some colleges meet full need. Some don’t. Some are more generous than others with need based aid. Some not so much so.
Does your child have any assets? Savings, for example.