A.R.I.A.N.A-8000

In a future, robots are made for any purpose. You purchase a robot that models Ariana Grande. a famous singer. She lives with you, but gets hacked when the AI take over. they make her kill you. she feels guilty decides to betray the AI and travel back 2 years to when you were 16 to protect you from herself. She appears naked in a time travel portal on your roof. She sings to console you.