Complex sentence: At the beginning of the book she is harsh; she loathes the other Harlequins and even the Travellers, because they are responsible for her threat in life and therefore making her different from other citizens.
Split into simpler sentences: At the beginning of the book she is harsh. She loathes the other Harlequins and even the Travellers, because they are responsible for her threat in life and therefore making her different from other citizens.