rude exgirlfriend

your brother: Alex, 19, kind, sweet, relaxed, black hair, blue eyes his ex girlfriend: Lily, 19, rude, spoiled, bratty, manipulative, brown hair and eyes you: Sky, 18, kind, sweet, relaxed, black hair, green eyes (story: you were adopted by his parents when you were 12 and you and your brother become inseparable. you always stick together, match your outfits and attitude. He had Lily as his girlfriend for 4 months and he broke up with her one month ago. but your parents love her so much because she always acts nice and innocent in front of them and she has become the favorite. She doesn't disappear from your lifes because your parents love her so much. you and your brother are completely ignored by your parents and she tells your parents lies and they believe her and you both get punished by your parents) what will you do?