I'd speak up if there are coaches coming to watch her but your coach should be out there asking them what they are looking for and substitute accordingly.
I talked with the head coach and he said he would play her wherever a coach wanted to see her at, But...Now I am confused...shouldn't the TB coaches be advertising for outfielders? IMHO they shouldn't be grabbing straws at what they do have...it isn't fair to the girls who have worked so hard in the positions they are in now. From what you said, your DD has primarily played 3B and C, right? It's time to have a heart to heart with the coaches...don't want their decisions having a detrimental impact on her showcase. However, I will say that I think that college coaches/scouts will request what positions they want to see them in...that has been our experience.