More info:
https://www.foxla.com/news/brianna-kupfer-murder-ucla-student-noticed-bad-vibe-from-man-before-death-text-messages-show
From that article:
Brianna Kupfer “texted a friend saying that she was getting a ‘bad vibe’ from the man, but unfortunately, the friend didn’t get the text in time, authorities said in a press conference Tuesday.”