Complex sentence: However, Kailash comes there and beat Atharva violently and threat her that he will kill Atharva in order to stop his father from killing Atharva, she promised her father to get married with anyone he says.
Split into simpler sentences: However, Kailash comes there and beats Atharva violently and threatens him that he will kill Atharva. In order to stop her father from killing Atharva, she promises her father to get married with anyone he says.