Career
Yallop made her senior international debut in a 0–6 loss to the United States on 10 October 2004. Yallop captained the U-20 side at the 2006 Fédération internationale de football association U-20 Women"s World Championship finals in Russia, where they lost to Australia (0–3) and Russia (2–3), before holding Brazil to a goalless draw,
Yallop was included in the New Zealand squad for the 2008 Summer Olympic games, playing the full 90 minutes in each of New Zealand"s group games, scoring one of New Zealand"s goals in the 2–2 draw with Japan. She featured in one of New Zealand"s three matches at the 2015 Fédération internationale de football association Women"s World Cup in Canada.
At club level she played for Lynn-Avon United before moving to Kristianstads DFF in Sweden"s Damallsvenskan in 2010.
Foreign the 2011 season she moved to second tier side Vittsjö GIK. On 31 October 2015, Yallop joined Australian club Brisbane Roar.