Queen Esther?
Yes. Her uncle Mordecai informed her that all the Jews, including herself, were condemned to die by the decree issued on the advice of the wicked Haman. She, being in a position to try to persuade King Ahasuerus to overturn the decree, was persuaded by her uncle, who said, "It may be that you were born into the kingdom for such a time as this."
This is a similar circumstance. Esther made up her mind to petition the king, at risk of her life, saying, "If I die, I die."
Of the Bible. Great story.