Could the psychiatrist's have assumed Casey's peers would shun her & she would likely gravitate to younger 'friends?'
Perhaps some of her responses set off alarm bells & caused them to add the stipulation.
It's odd because there are no younger siblings who would have friends coming over to the home.... so were they specifically anticipating she'd make contact via the internet???
There are so many missing pieces to the puzzle....
I don't think it was specific to her particular situation, more of a *boilerplate* restriction. Doubt it was given much thought, it was just in the list in relation to all people held on that charge.