Mitsuha would be making her way back from the Byoin from visiting her mother. Even with all that is going on, she has to focus on her private home life that is slowly deteriorating what with her own mother being sick. She's honestly been a little bit weighed down as things start to pile up. It really started with learning about Aria's death. Mitsuha can't fault her for her own misfortune. But in the long run, not only is she having to watch her mother slowly die before her all the while being looked at like she should be guilty of escaping a similar fate in the future once she lost her Kaguya powers. Seeing how Aria's death effected Keniwa, learning of his rise to Sennin-hood. Announcing herself as his rival and learning of a potential mission that could result in the Fifth Hokage's death if things aren't done perfectly. Going on to Otakemaru, seeing him fully hurt from Aria's death.
It wasn't until a few days later that a gunshot rang through the Village and Mitsuha had seen Ishi's dead body at the gates. Her own mind had relived that moment in which an armored and masked ninja had attacked Leaf Gates some years ago. That moment was the closest that she has ever been to death and left her mentally scarred. Despite her own efforts to try and forget it all, it seems that she will always remember it. She has all of this weighing heavy on her mind as she would make her way from the Byoin to her mansion.
It wasn't until a few days later that a gunshot rang through the Village and Mitsuha had seen Ishi's dead body at the gates. Her own mind had relived that moment in which an armored and masked ninja had attacked Leaf Gates some years ago. That moment was the closest that she has ever been to death and left her mentally scarred. Despite her own efforts to try and forget it all, it seems that she will always remember it. She has all of this weighing heavy on her mind as she would make her way from the Byoin to her mansion.