Complex sentence: She knew Killian from an early age, and the two have been lovers for years, although when Kiani was born; due to Killian's militant ways, they parted ways and gave Kiani up to another family, a decision that haunted Anya forever.
Split into simpler sentences: She knew Killian from an early age, and the two have been lovers for years. Although when Kiani was born, due to Killian's militant ways, they parted ways and gave Kiani up to another family, a decision that haunted Anya forever.