The answer is: His sisters and his mother are very fond of him.
In Mary Shelley's Frankenstein, Frankenstein's main goal after seeing the monster for the first time upon its creation is that <span>he wants to escape the consequence of his choices. Upon seeing his creation, he was terrified of it and later became sick. He simply wanted to return to his family and forget about what he did.</span>
It reminds the speaker of who the speaker is and their identity, not only that but it reinforces the speakers feeling of separation