source: www.missionjuno.swri.edu/junocam/proc...

when they videochat online she uses an everyman filter to hide her face and looks (ostensibly for anonymity, and you know it's not that weird for a smart and very online girl to do something like that)

solaris(AI)'s nature would be obscure as first - maybe Hari joins Kris's AI research group chat, they have chemistry, and only as they meet offline he recognizes her as a dead ex and after the initial shock and denial begins to figure out what's going on

In the Tarkovsky adaptation, the way Hari struggles with being embodied in human form tells us a lot about Solaris - the ocean, as smart and advanced as it is, can only understand humans by living as one, loving as one, and suffering as one

solaris would still be a transcendent intelligence, but a deep reflection of humanity this time (given its training data), and what happens between Kris and Hari would mirror what goes on between solaris and humanity