Complex sentence: The banging then proceeds to move its way up towards the nursery, where the sounds of it destroying the room are heard; this prompts Eleanor to run towards the source, however, Grace is nowhere to be found.
Split into simpler sentences: The banging then proceeds to move its way up towards the nursery, where the sounds of it destroying the room are heard. This prompts Eleanor to run towards the source; however Grace is nowhere to be found.