Prosecutors say she wrote threatening graffiti on a bathroom wall at Saint Xavier University last month. The school shut down for four days while officials investigated.
Loberg's family says she has a history of depression.
University and city police have stepped up patrols.
"Security on college and university campuses will continue to always be at a stepped up rate. That's partially because we are in the shadow of Virginia Tech and of course closer to home tragically Northern Illinois. And so always we do everything we can to ensure that our dorms, residence halls are maintained, the security is maintained," said Joe Moore, University spokesperson.
The judge set a curfew for Loberg and ordered her to stay away from all college campuses. She must also undergo a mental health evaluation.
St. Xavier spokesman Joe Moore says Loberg has been placed on immediate administrative suspension and is barred from campus.