1. Pendency of DV case will b shown in PCC.
2. to 4. Before filing DV case your wife might had approached police with complaint. Secondly DV is a criminal case filed in criminal court so Nayab Court being police official too is appointed in court. On court site also DV cae and status is available.
5. Then police will mention filing of DV case.
6. yes.
7. No. It is routine procedure.
8. Your mother can file criminal and civil cases against wife.