I ordered food at 1am, my grandma noticed but faked being asleep(I knew she was asleep). She brings it up the same day at around 5pm, I apologize sincerely because I should have asked.

The thing is it's been a whole WEEK and she keeps bringing it up and I apologize everything, she says I should've apologized right when it happened or the morning after, which I see but i can't go back in the past so what am I gonna do about it, I keep apologizing, but she brushes it off. She says "if you had even an iota of respect you would've apologized that morning", so I say "I apologized after you brought it up, that's fairly normal"

Am I bugging, like idk if I'm actually in the wrong, like what?