I saw this much more as a story about gender and sexual roles than I did about race. A lot of Dora's struggles to not give in to her people pleasing programming - dead on.
Dora's boyfriend seemed to be a bit damaged too, and I don't think that he deserved to have her walk right out on him, after all, he was trying to do right by her. But then again, Dora was not in a great frame of mind to begin with. And that's a character's motivation within a story, so I don't have a problem with that.
It's interesting that the story doesn't go into Dora's past, which is conspicuous by its absence, and an interesting narrative choice. Had Dora's past been delved into, it would have greatly changed the story. As it is, the audience can only wonder why she is the way she is, and why she's not still working as a happy sexbot.
As a side note, and not to be taken as a negative criticism of the story, but 'sexbot'? These 'bots' have bones, tendons and blood, require food and by necessity, eliminate waste, are completely sentient, and have normal cognitive responses, apart from what's hard-wired into their brains. They don't seem the slightest like robots to me at all. That really increased the creep factor of this episode by a huge amount.
But then again, that's pretty easy to read as an allegory for the sex industry as it exists today. This story was really multi-layered. It worked well. I was very happy with this episode of Escape Pod. Unconventional and thought-provoking, and I really enjoyed that.