Complex sentence: On 30 December 1993, Eric goes to Demdyke Farm, where Elizabeth is looking after her granddaughter, Alice Bates, and threatens her so she won't go to the police but Elizabeth is determined and leaves the house and Eric follows.
Split into simpler sentences: On 30 December 1993, Eric goes to Demdyke Farm, where Elizabeth is looking after her granddaughter, Alice Bates, and threatens her to stop her going to the police. However, Elizabeth is determined and leaves the house and Eric follows.