Yah, she killed him. As you can see at the beggining, somebody calls her, but nobody speaks. After that, in tv they are saying that police have a suspect and they are closing in to it. That means the phone call was from police, they called to make sure she is at home, that's why nobody spoke. Also, in the video you can see her shocked after she sees body and then she becomes nervous, because she woke up from rage and starts thinking of what she has done.