Can my PennKey password be reset manually by a PennKey administrator, or can someone tell me what it is if I forget it?
No. Passwords are stored in the system in encrypted form, and cannot be read by administrative personnel. Only you should ever know what your password is. The only manual operation that an administrator can perform on your PennKey is to issue a Setup Code against it, which effectively freezes it until you reset your password using that Setup Code or another that you subsequently obtain.