To find Anna's change after her purchase, you subtract the cost of the toy from the amount of money she had:
\[ \text{Change} = \text{Amount she had} - \text{Cost of the toy} \] \[ \text{Change} = 4.57 - 2.35 \]
Now, performing the subtraction:
\[ 4.57 - 2.35 = 2.22 \]
So, Anna's change is $2.22.