Daisy's way of counting

"1, 2, 3, 4, 5, 6, 7, 8, 9, 10 (so far so good),
11, 12, 13, 14, 15, 16, 17, 18, 19, 20 (sometimes she omits 12),
51, 52, 53, 54, 55, 56, 57, 58, 59, 100." Same way every time.