Frankenstein's agitation over his role in the deaths of William and Justine impaired his mental state and became obvious in his haggard appearance and antisocial tendencies. He spent much time alone on the lake after his family had gone to bed and contemplated drowning himself. His father believed the distraction to be grief, but Frankenstein couldn't get over his melancholy because he felt responsible not only for the deaths of William and Justine, but also for the grief that weakened his father's health and the drastic alteration in Elizabeth's nature.
She was somber and dark, where before she was radiant and bright. Elizabeth also noted despair and vengeance in Frankenstein's manner, and she tried to comfort him with her friendship, but sometimes his anguish and fear concerning the monster was so strong that he had to leave his home to escape. His family and friends couldn't ease his mind because they didn't know the source of his trouble. They had no idea about the monster, and he couldn't tell them, so he had to handle his anguish alone. He embarked on a trip to Chamounix to escape again.
