But to answer the question more seriously, WF male and pearl female would probably result in normal coloring offspring.
Do you know if there is any chance that your male is carrying Pearl genetics? When he was younger, was he visibly pearled before his first molt? Do you know if either of his parents were pearls? Or if either of the female's parents were white-faced?
White-faced is a recessive mutation, so both parents must have at least one copy to have visibly white-faced babies.
Pearl is both recessive and sex-linked, so the dad has to have at least one copy for any of the babies to be visibly pearl. The mom can't pass pearl to female offspring.
Combine those two birds together, and the most likely outcome is girls split to white-faced and boys split to white-faced and pearl. All babies would have normal coloring with visible mutations.