This, of course, further complicated matters. In summary:
1 – Simulated time stop going on in Sarah’s mind
2 – Indistinguishable from reality to her, making it more than just imagination
3 – Can switch bodies with people while in the simulation
4 – She experiences the simulation at an accelerated rate
...Okay, yeah, I can see how this might’ve been difficult to follow when you had to wait 2-3 days to see the next part.