A former Delavan dance instructor will be sentenced October 13th on charges he sexually assaulted a 15-year-old girl he taught. 48-year-old Ariel Cisneros has pleaded guilty to repeated sexual assault of a child in Walworth County Court. On-line court records indicate a charge of first-degree sexual assault of a child was dismissed but will be read in. The criminal complaint indicates the assaults took place between December and April at the Dance Factory in Delavan.