She literally couldn't be locked up. Otherwise it would have implicated BHO and his whole cabinet, who apparently all had email addresses on her private server (haven't confirmed, but we know BHO knew about it, see below). You think Gowdy was more powerful than BHO?
www.newsmax.com/Newsfront/wikileaks-barack-obama-knew-hillary-clinton/2016/10/25/id/755311/
wikileaks.org/podesta-emails/emailid/31077