Zìcóng tā jià guòlai, jiālǐ shìshì bú shùn, pópo jiù mà tā shì sàozhouxīng.
Ever since she married into the family nothing had gone right, so her mother-in-law called her a jinx.
Tips
culture
A comet's tail looks like a 扫帚 'broom', hence the name. Comets were taken as omens of disaster, so calling someone a 扫帚星 blames them for bad luck. It is a harsh old insult, traditionally thrown at women blamed for a family's misfortune.