Who was the last person to see Billie Eilish?

The world is missing one of the biggest pop stars in 2020! Billie just made her official video for her new single "Therefore I Am". Her disappearance is strange and bizarre to her family and fans! No one seems to have any leads or seen anything at the time of her disappearance either! No camera footage for the mall showed the parking garage or where exactly the 18 year old pop star vanished to after running out of the mall in the last scene of the video shoot! No one has seen Ms. Eilish for 48 hours now. Where in the world is SHE??