Read the instruction bro
OKay, so you are in Pakistan means you can't order, your wife as sponsor has to order it and pay $5 for it and the notes can only be delivered to the Canadian address. (However, they have introduced delivery by email-if 8 pages or less)
Now since your wife wants to access your information, she needs your consent and for which the 'authority to release information' form is filled by your and signed that you give your wife authority to view your personal information. OR if you guys filled and SIGNED 'use of a represantative' form at the begining of initial application (your wife being your represantative), you can send a photocopy of that form instead if you want and thats considered as consent.
Next is Access to Information and Personal Information Request, this form is filled and signed by your wife, since she is requesting the CAIPS. All she needs to fill out is her fist name, last name DOB on the top. Check 'receive copies of the record' ($5) Select language. Request for CAIPS, Embassy is Islamabad PK, YOUR immigration file number. at the bottom check the box if your wife is a canadian citizen or a PR.
Her name, phone number, her address in Canada, signature and date.