I hate it when people say "leave it ot the pros!" You hear that a lot in the (former) wedding forums. You can learn a lot in a very short time in terms of lighting, and if you have the equipment I think you're crazy not to get involved in your daughters career. .
Simply recognizing that it does take time to learn lighting, and that one could be hurting the income production capability by circulating ordinary photos that do not catch the eye of someone selecting 'talent' for a job is merely being wise!
If he want's to learn lighting, that is great. If he wants to eventually shoot his daughter's headshots for use in getting her face circulated, that is great. To NOT take the pictures himself, but to use a pro, until AFTER he has learned to use lighting satisfactorily is merely recognizing one's limits.