My two cents is a kid that age doesn't need training. If you're looking for someone to watch your kid then any camp will do. If you want to work on her throwing and catching, you taking her to the wall will do the trick and cost you nothing. Those are the fundamental skills upon which everything else is based, and quite frankly nothing is more meaningful to your child than time spent with her, not the money spent on her. She's got to experience lacrosse, or anything, as fun to become invested in it.
<stepping off soapbox>