I presume he never signed a paternity acknowledgement?
or took a DNA test to establish paternity? THat this has only NOW been brought up and was not filed previously when the child was small?
If so:
I can't imagine WHAT she expects to sue for. The age at which CS ends in IL is 18, and she can't sue at age 20 retroactively to recieve anything prior to the filing date.
http://ocse3.acf.dhhs.gov/ext/irg/sps/report.cfm?State=IL
D. Age of Majority
D1. What is the age of majority in your State?
18
D2. What is the statutory cite for the age of majority?
755 ILCS 5/11-1 and (750 ILCS 5/505)
D3. If not addressed in the order, at what age is child support automatically terminated as a matter of State law? Qualify, if necessary.
Under Illinois law the duty to support ends at the age of 18 unless the order provides otherwise.
As to retroactive support, it appears they can only go back 2 years, and the child was already past age of majority 2 years ago:
I4.1. If so, for what prior periods (e.g., birth of the child, date of separation, prenatal expenses, 5 years retroactive)?
Support may be established back to the date of birth in a parentage or back to date of separation in an abandonment case. In a parentage action brought within 2 years after a child's birth, the judgment or order may direct either parent to pay the reasonable expenses incurred by either parent related to the mother's pregnancy and the delivery of the child. (750 ILCS 5/505; Public Aid Code 10-10,11,11.1)