Public rather than their politicians should decide when the elections are held. Your Mother Theresa is just manipulating her people. She sees an opportunity and she has a motive to put her agenda in front as soon as she's re-affirmed in the office. The current British government is planning to play markets and politics in two sides of the world, the US and China rather than the EU where Germans are dominating. Anyhow, Mother Theresa needs more time than she would get without the elections to make sure the double game's set.