Good exploration of an interesting topic
How do you tell if an AI is sentient? I've seen this explored in any number of novels, in one fashion or another, and this is not a bad case.
I found the pathway to a feel-good resolution the author used to be a bit too easy, in some ways. That said, the author seems to have been more interested in trying to demonstrate true sentience to the satisfaction of the reader, rather than go for gritty realism in the story.
The android in the story is, in many ways, a better woman for her man than any natural woman could be, especially after achieving consciousness. I'm sure that is the point, but I'm actually kinda jealous of the android's lover, lol.
There is a fair amount of bare-bones erotica in the story. It IS about a sexbot achieving consciousness, after all. None of it is really obnoxious and much of it is even pertinent to the story.
Anyway, it was a decent read. Not sure why I only rate it a 3, but it feels like it is missing something I want in stories, I guess. Not enough doubt during the "black moment," maybe?
Do enjoy it and make your own mind up. :)