Sounds like you're talking about attending camps/clinics, not necessarily tournaments. I will guarantee when your DD begins recruiting correspondence with college coaches one of the persistent questions she will be asked is "What tournaments are you playing in this summer, and who are you competing against?" The answer to that question will greatly influence coaches. I cannot stress enough the importance of competing at a high level. If her team is not doing that, college coaches will want to know why. That could possibly be a strike against her that she will have to overcome.
The decision about which camps/clinics to attend rests primarily on what level of player your DD is - some HONEST soul searching needed here. Go where she has the best opportunity to be seen by coaches who will HONESTLY recruit her. Go to the summer OSU camp - IF she has a shot at that level. If she seems to be more comfortable fitting into a D3 program, by all means shift your focus to attending as many of those that make sense.
Believe me, most camps/clinics are set up to be money makers - and there's noting wrong with that. Many programs desperately need that cash to support their program. But by attending the RIGHT one at the RIGHT time, these camps can be a great way for your DD to meet coaches of programs she has a shot at, and make an impression on them. But as far as the "best" camp? That all depends on your DD's skill level. If she hits like Bustos and pitches like Fernandez
, you probably should have your sights set on major DI programs - and their camps.