Count Ann's grades: 1 A, 3 B's, 2 C's, 0 D's, 0 F's (6 classes total).

Assign grade points: A $= 5$, B $= 4$, C $= 3$, D $= 2$, F $= 1$.

$\text{Total points} = 1(5) + 3(4) + 2(3) + 0(2) + 0(1) = 5 + 12 + 6 = 23$

$\text{GPA} = \frac{23}{6} \approx 3.83$