causation! DQN Abducted Her Four Guns to Kill DQN

A DVD titled Revenge Video has been sent to my house. when i play it back, my girlfriend... She is being spied by an unfamiliar DQN. She is harassed by the unfamiliar DQN because she doesn't know why. because of me, she saw something like this... It’s probably the guy who scolded me when I was a student and threw away a woman belonging to Yariser, but it may be a causative news.