Complex sentence: After Will got into a fight at school, Nathan realised how upset his siblings were and revealed to Maisie and Will that Natasha had handed over all of her assets to him, including Home Farm itself and her 49% of the business.
Split into simpler sentences: After Will got into a fight at school Nathan, realised how upset his siblings were and reveales to Maisie and Will that Natasha had handed over all of her assets to him. Including Home Farm itself and her 49% of the business.