Disguised as a Kyo-ashita guard, Future Alexand (although not an intruder on the ship) thought it best to observe the events of the past, incognito. Her mission in this time was not purely to visit Katherine, but to take part in an event which set in motion a series of occurrences, leading to a cataclysm in her own past self’s life.
https://worldphoto12.wordpress.com/2019/12/15/traduttore-del-sito-per-la-comunita-translator-site-for-community/