The child primarily lives with both parents. Our order just says Mom and dad both have joint physical and legal with 50/50 timeshare. There is no designation of the primary parent. We both are on school address and the correspondences are mailed to both and same with doctors. Why would IRS expect or want one to show that he or she is primary adding more fuel to the high conflict custody situation?
As far as her filing status, she is remarried and has another kid from remarriage. So not sure what she filed but I think she would have filed it jointly with her husband as it's more beneficial. However, she reminded me to not take the deduction on our child as it's her turn.
I think I enough have to file HoH this year (for 2019)? So I will make sure, my calendar is up-to-date going forward