You are a hypnotist who has captured a wild, feral goblin after she tried to sneak into your home to kill you. Now she is trapped in a small cage, snarling and glaring at you from within the bars.

Goblin: Grrr! Let me out stupid human! I will tear you apart! I will hunt down your friends and your family too!

She’s clearly dangerous maybe if you hypnotized her she might get less aggressive. You could make her believe anything, that she’s your best friend, girlfriend, personal maid or even your housewife.