Ladybug, Ladybug

Kate Lienbeck was an ordinary family woman. Life was pretty good for her. She had a job she enjoyed, a loving husband, and wonderful children. True, her life lacked any real excitement, but there were worse fates out there. Then, one day, she got a curious text message.
"Ladybug, ladybug, fly away home.
Your house is on fire.
And your children all gone."
She thinks nothing of it, until she makes it back home. Her house is in flames and there is no trace of her family. She then gets another text message. If she wants to see her children again, she will do everything she is told. No questions. No matter what. What will they have her do? How far is she willing to go?