Hi
1. No
2. You can fax them or just wait until you sponsor your wife
3. As a PR, you can not sponsor from outside Canada. You have to go to Canada and file from here. You may be able to get her a visit visa, maybe not. Immigration might be suspicious of it but if that is a problem, you go to Canada alone and do the sponsorship and she will join you in Canada when she gets PR.
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The OP doesn't update CIC on his martial status. He is a PR and received it before he married so CIC doesn't care.
PMM