In Season 10, Episode 11 World Enough and Time Bill is shoot and taken away and later wakes up to find she's been fitted with a replacement heart. When the Doctor ends up reaching the floor Bill was taken to he encounters a Cyberman who says it was Bill.
In the next episode The Doctor Falls we see Bill like normal but it's revealed that she hasn't been reverted and is still a Cyberman and remains so for most of the episode despite times where we see Bill in her human form.
Since we see Bill as a human in episode 11 when talking to Razor, do we know if at any time she was talking to Razor, if Bill had been upgraded to a Cyberman and it was just her thinking she was human (like what happens at the start of Episode 12 before The Doctor shows her reflection)? If so do we know when the upgrade occurred?