Issues with ex

My x and I never married and we have a child recently she decided i needed to pay support for a baby i didnt want she tricked me. problem is she has a seperation agreement and divorce from her xhusband but the verbally agreed he didn’t have to pay alimony once a divorce went thru. I kept a copy of their agrement before she got her stuff. when we go to court this week for support of the baby who i haven’t saw can i use this to say she has income and is hiding it? i know he’s not paying but still it could be possible income if he was cause their agreement to stop it was verbal and its not in the papers so she can’t prove diferent.

If she is not receiving the money, it is not income and will not be accounted for in the calculation.