Thank you very much, you answered all my questions in one. Should I wait to get an application number before applying for visit visa? Although its not a requirement for visit visa, I thought including it would help.If she is in Pakistan then it might tack somewhere in between 9-12 months. It will tale 45 days for Sydney NS office to send you application received message with case number if all the documents are complete and yes you can apply for her Visit Visa at the same time, there is no legal problem