Wow are we hearing from a bunch of geniuses here
The גמרא, מגילה יא עמוד ב
Three lines from the bottom
בא שטן וריקד ביניהן הורג את ושתי
Satan came and danced amongst (between) them and killed Vashti
Is that clear enough?
Or are you ready to take on the גמרא as well?
I don’t see this as a contradiction. It was not unusual for women banished to the palace of tears to commit suicide.