It's starting to make sense but in her defense she just got a 2021 Honda Accord and her daughter had it before. It still has factory warranty but I'm apprehensive. I did some research and it still has factory warranty. I ran the Carfax and I only see regular maintenance and it drives good. It was sold to a fleet company and then she bought it for her daughter.
Check to see if the transmission fluid had been replaced yet. I hear on youtube that mechanics recommend changing it earlier than when the manual recommends
But regardless of that I'd steer far away from nissans