Sara had a lot of time to think.

Actually it wasn't that long. Her neck was broken, and the only reason she was still conscious was because her soldier boosts kept her brain oxygenated and her heart beating.

Also, the clock on the nuke she planted was ticking.

"If my memories were erased, I'd become a new person. The current me would still have lived but it would have been someone else I wouldn't even know.

But if my brain is completely vaporised, then that new me will never wake up. So I'll have never existed in the first place."