What does it mean when in my dream my sister was shot in the mouth and killed?

if your dream was very vivid, and you remember details, you might have a gift of dreaming future events. this stuff isn't just in the movies, is she suicidal? did you take any medication before you slept, because medicine can give you insanely vivid dreams, especially ambien, xanax, melatonin, i dreamed one time very vividly i was loading up very specific guns i know and unloading on people at bus stops and outrunning cops..scariest craziest experience of my life just because of medicine.