Khadisha Debesette scored four goals, including two penalties in the final 14 minutes, to lead the victory. Her twin sister Khadidra scored three in a 5-0 win over Dominca in Rosseau on September 18 and four others in 13-0 rout over Dominica in Malabar, giving the pair 11 as Trinidad has won three of four matches by a combined 29-0.
Sunday's victory put Trinidad atop Group B in the first round of Caribbean qualifying with nine points and a game yet to play. Dominica was second with six but has no games remaining, and St. Kitts was last with no points and a match to play Tuesday in Trinidad.
Unlike the other three groups, which were played in a tournament format in a single venue, Group B was played with each team facing the other at home and away.
Trinidad joined the other first-round group winners the Bahamas, Guyana and Jamaica in the final round of qualifying, from which three will advance to next year's eight-team CONCACAF finals.