Rubuta ci gaba don wannan sakin layi - Ta fara fitowa a gasar a shekara ta 2006, lokacin da ta kafa mafi kyawun lokaci na 1: 1: 48 a matsayin mai gudu a rabin rabin Marathon a Mazatlán kuma ya rubuta lokaci na 2: 51: 32 a Mexico City Marathon. Ta inganta mafi kyawun lokacin marathon na sa'o'i 2:43:21 a shekara mai zuwa kuma ta lashe lambar azurfa a tseren mita 5000 a Gasar NACAC ta 2007 a San Salvador. Romero ta fara fitowa a fagen duniya a gasar IAAF ta Duniya ta Rabin Marathon ta 2009
kuma ya gama a matsayi na 39. A shekara mai zuwa ta yi tseren marathon mafi kyau na awanni 2:42:33 a León, Mexico kafin ta ci gaba da neman lambar zinare ta mata a wannan taron a Wasannin Amurka ta Tsakiya da Caribbean na 2010. Ta yi tseren rabin marathon mafi kyau na awa 1:14:13 a gasar IAAF ta Duniya ta Half Marathon ta 2010 a Nanning don kammala a matsayi na 22 a tseren mata.