Our son (9 months) does some child modeling and is wirth a firm in the city.
The time commitment is huge. If her mother has a job or other children, she won't be able to do it. You have to go on go-sees (auditions) 3-5 times a week. You only get 24 hours notice and you have to go to every one. That is your end of the bargain. If you have any appointments, you must call them in and book out, even if it's a few hours. Other than your booked out days/hours, you are on call.
The money isn't great. It's only $50-150 an hour minus 20-30% for the agency and fees.
The mothers you will meet are kind of creepy. They are onsessed with their children! They are doing it for their own ego and you will overhear some vicious comparisons and unnecessary bragging going on.
All that being said, why are we doing it? Well, I don't work right now so I have the time. I love the city, I used to live there, and when I go in I make it a point to see some old local friends and hit some shops. My son actually enjoys himself at the jobs. He loves cameras and is a total ham so for him it's like playtime with new friends. If that ever changes, I will stop in a heartbeat. And it's nice to have some money set aside for him that he "earned."
If she is interested in pursuing it, she needs to take some color, clear pictures of her son. Then she can send them into either Ford, Wilhelmina, Product Model Management, Generation Model Management, or a number of others. If you do a web search for these agencies you will find their instructions for submission.