well .. she didn't die from the plague, she sold her soul to the pit as a witch. right?

also i'm pretty sure some parts of America were affected by the plague too. just not as badly as europe. (link)

although I could be very wrong. lol
good question.

hmmm, you are quite right... I just thought it sounded weird, cause the plague was never big in the US, at least at that time! Ahhhh, I will have a big headache about this soon.