Lily the Forest Sister
Amber Castle Audio Book

The evil Morgana Le Fay has spirited the Spell Sisters of Avalon away from the magical island and trapped them throughout the kingdom. It's up to Gwen, her best friend Flora and a very special horse named Moonlight to find the sisters and return them to Avalon before its magic is lost forever. Gwen and Flora are faced with a swarm of hornets and enchanted vines as they try to rescue Lily the Forest Sister. Can they overcome Morgana's magic and return Lily to Avalon?