Lady Shilight - Two Loves - YA

This edition includes the 10th and 11th books in the Lady Shilight Series Young Adult Version -- Lady Shilight is abducted on her way home to Dovonshar. When she escapes, she is pursued by a man who wishes her dead. Arriving in Rydolke she learns King Kuandel and his family are being held prisoners there. Their sickly child was taken from them and pronounced dead, but where is the body?
The queen, tired of waiting for Shilight and Bardeth to tie the knot, urges Shilight to set a wedding date. She agrees, but there is something she must do first. Shilight travels to a distant kingdom to reclaim her black stallion, and finds herself facing a spiteful witch.