I echo what the others have written. On campus ID clinics (you only need to go to one day if they are multiday) are the best for recruiting in my opinion. We did four on campus events the summer before junior year, and one that fall. And then COVID hit in the Spring. They were by far the most effective thing my son did in terms of recruiting. We always tacked on a second day to attend the info session and take the campus tour (most of the schools did not incorporate them into the ID clinic).
Looking back now, I think attending more on campus events would have been better, but that is due to COVID; in a normal year I think our plan was fine.
I would not ask the coaches whether your daughter should attend the camps, the answer I would imagine would always be “yes”. Attend camps where she is likely to stand out (i.e. check the roster for player bios and see if she fits with their standard); attend camps where she’s likely to be interested in the school and this will allow her to get to know the school better, and the soccer program, and will allow the coach to get to know her. Attend different types of schools, unless your daughter is firm on the kind of school she wants (i.e. urban/rural, bigger/smaller etc).
I am uncertain as to the value of camps run by third parties, my son never did one. My guess is that they are much less useful. But, it all depends which coaches are attending – if your top choice school will be there, then it’s probably worthwhile.
Best of luck!