The mother of Yap Shing Xuen, a 16-year-old girl fatally stabbed at a school in Bandar Utama, has vowed to keep fighting for justice after the Shah Alam High Court acquitted a 15-year-old boy accused of her murder. The judge ordered the boy to be placed at Hospital Bahagia Ulu Kinta in Perak after finding he was of unsound mind at the time of the October 14 attack.