Hi all, I thought I’d update this thread since you were all so helpful. My daughter and I have just got back from LA, where she did her first four test shoots.
So, after much thought, my partner and I decided to support our daughter in this endeavor. After she signed the contract and committed to coming to LA when her school thanksgiving break began, her agency set her up with four different photographers over four days each of whom did a different “test shoot”. These shoots are used in her portfolio, to show potential paying clients different “looks”. The photographers and stylists provide their services free, in exchange for being able to work with new models.
Each of the four shoots was very different, from a feminist, edgy female photographer to start, to a typical “glamor” shoot at the end. They were all in different parts of LA, and we got to see everywhere from Studio City to Venice beach and Silver Lake (both outdoor shoots) and the Flower district (very hairy!).
Well my daughter had an absolute ball. Three of the four photographers (two were female) were very nice, and giving her all sorts of advice about the industry and what kind of things to avoid. One photographer was a little sketchy though, and reinforced the reasons why she should be accompanied to every shoot. Even on that one though, she liked the “look” that they provided for her and enjoyed the whole experience (since mom was at the back of the room for moral and other support).
She has really come out of herself in the few short days we were there – grown so much in confidence that I really can’t quite believe it. Always an anxious “hide in the corner” kid, she stretched her legs out on the airport shuttle bus coming home, talked up a storm to all the photographers and asserted herself when she needed to. She said these four days were “the best time of her life” !
Now she’s home, she’s happily catching up on homework. 
So I know this is early days and this was just “test shoots” and so the fun part, where she is not competing for work. But at this stage my partner and I are so happy we let her embark on this new adventure. Her happiness and self confidence have been augmented beyond what we could have hoped for.
I’ll update more as things progress.