I don’t view as paying different amounts for undergraduates for different kids as an equity issue. For both girls they picked places where they received merit aid but given the different aid level/school costs we paid someplace close to 20K higher over 4 years for one of them. I don’t plan on cutting a check in that amount to the other one.
I also am reasonably sure that neither of them knows how much we paid for the other to go to school. Quite frankly it is none of their business