@Linkat,
So the counselor called me back - she decided it was best to not have my daughter involved as she could simply state that a parent read this on their child's phone - which was precisely what I stated (also stating my daughter's concern was what prompted me to look at her phone).
I let my daughter know - she wanted to make sure that the counselor would talk with him - I am not sure if she realizes that this would result in an investigation. I did not tell her.
I told her that yes, she was going to speak to him and look for any physical signs (but my guess is he will have any covered or if in his words he doesn't bruise easily - I also read that in the texts).
But at this point the adults will take care of it - she doesn't need to worry or be involved.