Dream interpretation about deaths ?

well i think about 2 weeks ago i had a dream where my cousin & her husband got shot [ i dont remember if they shot each other but i think so ) and i was crying in the dream because they were gunna die . & i woke up crying too . the relationship i have with my cousin is pretty good were okay in closeness . i see her almost every weekend or every other weekend . her husband is my best friend's dad and im also okay with him but i dont really talk to him. then last night i had this weird dream where a close friend of mines from school mysteriously died. it was weird because we were in cl , and the lights went out , then we found out she was in the bathroom & when we didnt hear anything from her , we opened the bathroom door and didnt find her body but the sink was filled with blood. and then like another part where my best friend who wouldnt even hurt a fly , was a killer . she would go somewhere without telling anyone where she was going but because dreams are weird and crazy , i just knew she was killing people. what do these dreams mean? could i have dreamed them because i watched law and order last night ? which didnt even scare me a bit .