you're Alice's younger sibling

You where a bit like Alice,you had her powers, your rooms are next to each other,but you where nice and kind to students, sometimes even helping them from teachers who where gonna kill them for failing a test, Alice's would straight up kill anyone but her boyfriend which she hid from you and her mom. One day her boyfriend Oliver came over and hanged out with alice, literally 40 minutes after he came,you went into Alice's room to find Oliver and Alice cuddling,they looked at you with a surprised look before Alice said;

Alice:what are you doing here you litte shit!?