If she is still cycling, she should probably take the clown back to the lfs
until the cycle is done. If the ammonia is very high, it may either kill or at the very least extremely stress him. Clowns are hearty fish, but high levels of ammonia are not good for any fish.
She could facilitate the cycle by purchasing some "cured" live rock from the lfs
. This would be the best way to go.
Some claim that saltwater bio spira (spelling) helps jump start a cycle, but there is confliction reports on that.