Complex sentence: After her return, she cuts her already short hair, determined to not hide behind her fantasies; by that time, she also becomes friends with Taiki, who has lost his memory as a being from the Twelve Kingdoms.
Split into simpler sentences: After her return, she cuts her already short hair, determined to not hide behind her fantasies. By that time, she also becomes friends with Taiki, who has lost his memory as a being from the Twelve Kingdoms.