Who killed Miss Grande?

Halsey

Everything wasn't blue for this lady , she may of saw red for anger.
Halsey was at the event just for the fun but was caught staring Grande down several times during the shows even when awards weren't being won. She even put up her middle finger towards the singer at one point.
From many people who have met her , they say she feels rude but acts nice to get more attention and be known as a nice celebrity.
Halsey is known to be a little bit crazy maybe this was one of the many things she will do to make sure she is well known.