Complex sentence: Lilly, like her brother, is originally from England, but then immigrated to the United States; eventually taking up residence in Southtown, but later on returned to the United Kingdom with him, seeking peace.
Split into simpler sentences: Lilly, like her brother, is originally from England, but the two immigrated to the United States; eventually taking up residence in Southtown. Lilly later returned to the United Kingdom with him, seeking peace.