Thanks to the members for quick response. I have good news to share, my mother got 4 years super visa.
Here is her timeline:
Jan 6, 2015 - Submitted Documents at VFS Global
Jan 27, 2015 - Request for Medical
Feb 2, 2015 - Medical Done
Feb 26, 2015 - Visa Issued
Feb 27, 2015 - Passport...