Saw it again tonight.
I'm even more confused as to why K had Stelline's memories. The first time I saw it, it didn't make sense to me, because the memory was obviously very personal and powerful for her, so it didn't make any sense that she would just stick it wholesale in some rando.
On second viewing it makes even less sense. He asks her if she ever gives anyone real memories, and she says no, that's illegal. She also says she does memory implants because replicants have such hard lives, she wants them to have good memories to look back on. So she went out of her way and broke the law to implant a deeply private, personal memory, that is also very unhappy or even traumatic in a random replicant? That doesn't make a lick of sense.
She also says that while there's a little of the artist in everything, she is so good at memories because she has such a great imagination -- again, in direct opposition to the wholesale implanting of an entire, real memory.
I also wondered how she could see K's memory just by looking through her little gizmo. Can't Wallace use this apparent mind reading device to get what he wants from Deckard?
Another loose end: That other cop who was with K, Madam, and Koko when they found out about the replicant baby. He knows what's up but we never see him again.
And finally, it is clear that Wallace Corp isn't just the de facto ruler able to do whatever they want, which was a popular explanation for why Luv can just waltz in and kill Madam. If that were the case, she wouldn't have needed to go there in the first place, she'd have just been able to use their system and track K herself without having to go there and get her hands dirty (nor would she have needed to lie and say Madam tried to kill her). Nor would Wallace need to take Deckard off-world to really work on him.