I have several relatives who are alumni of DePaul. I'm unaware on this visiting school program.
If she was accepted by DePaul as a transfer student that's a possibility with the requirements posted here.
http://www.law.depaul.edu/prospectiv...r_students.asp
The only sister school programs I found were for study abroad programs in Ireland or China. As posted here.
http://www.law.depaul.edu/academic_programs/