Help! Family Sponsorship questions

[Abiki]

My aunt has applied to sponsor me, my husband & our daughter. She is a Citizen of Canada and do not have any other living relatives in Canada. She was since asked to provide detailed financial information (which she did).

I would like to know:

1. What is the process? - our applications were sent in before the other request for financial details.

2. How soon will we hear from Canadian Officials to say that we are approved? and will they send us more documents to fill out before we travel?

3. How soon after our applications are approved can we migrate.

4. If my family and I have been living in a foreign country for years (and at the time of submitting our application) - how complicated woud it be if we move back to our home country to await a response from the Canadian Officials?

Thank you much to anyone who can assist.
Abiki