I went to sleep trying to think of it and I've woken up annoyed!
All I can remember is there's a woman in it (she's either a CEO or a professor of something) who's daughter died, and she has the daughter downloaded onto a computer. I think the daughter/computer is called Vee (I think)!and she can remember waterfalls. I think some conglomerate came along and tried to steal the software.
It's a recent thing - I thought it might be an episode of Black Mirror but I just can't place it, and nor can my odd Google searches!