 Complete the following phrase:  Houghton was involved with England at U16 schools, U19, U20, U21 and U23 level. She was called into the full squad for a match against Germany on 25 October 2006, when Katie Chapman withdrew with an illness. She was an unused substitute in the 51 defeat in Aalen. She made her debut in the next match, replacing Emily Westwood after 73 minutes of a 60 win over Russia in Milton Keynes on 8 March 2007. Her first start came three days later, in a 10 win over Scotland at Adams Park. She missed the 