Would you even bother attending a camp or prospect day if the school-who you have sent film to and have touched base with at the appropriate times in the process (not being overbearing) has not peeped at your highlight video or even your profile?
Have your Club Director or even your HS Coach reach out to see if they have any interest at all.
Agree here. See if you can get your club director/coach to get a read on her. Have they ever watched her play and is so, why don't they have interest? Is there something specific about her play? size? running mechanics? stick skills? speed? parents? that is causing them to not be interested? If they say they need to see her play more, that might just be a play to get her to camp. You want specifics.