CREATE TABLE table_56204 ("Year" TEXT, "Date" TEXT, "Venue" TEXT, "Winner" TEXT, "Country" TEXT, "Score" TEXT, "To par" TEXT, "Margin of victory" TEXT, "Runner ( s ) -up" TEXT, "Winner's share  (  \\u20ac  ) " TEXT)

What is the margin of victory for nikki garrett?
SELECT "Margin of victory" FROM table_56204 WHERE "Winner" = 'nikki garrett'
SELECT "Margin of victory" FROM "table_56204" WHERE "Winner" = 'nikki garrett'