 Ṣẹkún gbólóhùn tó tẹ lé e yìí: : 2012 AIBA Womens World Boxing Championships ni Qinhuangdao, China, Marshall jẹ ayanfẹ lati gba goolu ni Awọn ere Olimpiiki London 2012. Sibẹsibẹ, o ṣẹgun 16 si 12 nipasẹ Marina Volnova ti Kazakhstan ni ibẹrẹ rẹ, idaji-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin-ipin- 