Counting to 10... and beyond!

Yesterday, we were having fun counting her crayons. I discovered that she has now learned how to count to 10 all by herself. She's got 11 and 12 down too, but then forgets 13 and proceeds right on to 14. 15 is right out. After dabbling with 16 and 18, she bounces around the higher double digit numbers and then on into imaginary ones, for I either no longer hear them at that point, or they are a different breed of number than my reality holds.