system
A chat on subreddit /r/NoStupidQuestions
human
This is a common tactic with divorce lawyers though. They have you withhold to the last second, so the other person doesn't have the same amount of time to prepare for the hearing. 

She's being shitty. If you were in this position, you'd want someone to tell you sooner, rather than later.
gpt
True, but op says he's being told one day later, which seems like a harmless amount of time.