T.F.
First of all you should spend NO money with the exception of a couple of head and body shots of her.
I grew up modeling and continue to do so occasionally. My 14 yr old has also modeled.
A couple of good local agencies are Kim Dawson and Campbell. You just send the pic to them and they call you if interested. Sometimes there are open calls...go to them and see how it goes.
Be ready to comfort her in disappointment. My daughter's best friend is signed with Kim Dawson and right now because of braces, she is knocked out of everything. It is probably the best right now, however, because she was missing school to do Guess ads and the school district gave her parents a hard time due to being out of school. The most time my daughter missed school was a week in CA modeling.
It is not as fun as it is cracked up to be. As long as you know it is WORK and have a good attitude, you will be fine.