Well the cops had already showed up to arrest her because she'd annoyed a lot of people. Heck in the last panel you SEE the cops standing behind her! But since she went along with resisting arrest... again... they just booked her and in the next issue she's out of jail and part of Superman's personal super-team... yeah not the JL, but the Supermen of America! Which.... never actually did anything because continuity reboot happened.