Credit report requests are free. Apply for a credit check from all three agencies (TRW, etc). If your credit reports are accurate, you know your ex isn’t messing with your credit, which should be your main concern. We files a FAFSA for both of our kids when they were entering freshman year of college even though we knew they wouldn’t qualify for need-based aid. The reason we filled it out was because some schools will not award merit aide unless you have “proven” that you aren’t eligible for need-based. We did not fill it out after her freshman year because she received no merit aide at her selected school so we knew it was a waste of time. That said, we received regular reminders to do so. The emails you receive have NO MEANING. As long as you check your credit reports and they are clear, drop it. NOTHING to be gained by thinking about this further, and much to be lost. Focus on a classy, courteous relationship with your daughter and a polite relationship with your ex. Relationships change over time if you take the high road.