Frankenstein by Mary Shelly Chapter 22 Page 12

Yet I would die to make her happy. If the monster executed his threat, death was inevitable; yet, again, I considered whether my marriage would hasten my fate. My destruction might indeed arrive a few months sooner, but if my torturer should suspect that I postponed it, influenced by his menaces, he would surely find other and perhaps more dreadful means of revenge.

He had vowed TO BE WITH ME ON MY WEDDING-NIGHT, yet he did not consider that threat as binding him to peace in the meantime, for as if to show me that he was not yet satiated with blood, he had murdered Clerval immediately after the enunciation of his threats. I resolved, therefore, that if my immediate union with my cousin would conduce either to hers or my father's happiness, my adversary's designs against my life should not retard it a single hour.