. For my own part I was not sorry. I had now neglected my promise for some time, and I feared the effects of the dæmon's disappointment. He might remain in Switzerland, and wreak his vengeance on my relatives. This idea pursued me, and tormented me at every moment from which I might otherwise have snatched repose and peace.
Victor probably felt obligated to complete his promise to the monster in fear that he would lose more loved ones. He was afraid of history repeating itself and probably felt anxious to know how his family was doing. Were they safe? Were they alive? These thoughts probably tormented his mind.