First of all congratulations on the new developments in your 'PR' journey.
Secondly, yours isn't the first case where applicant received a request to send PPs to CPP-Ottawa although his/her spouse was overseas; and we all know its not legal, therefore courier companies wont support, to send PPs by mail. As per my understanding from previous readings of such cases, you send your PP to Ottawa office, along with a letter explaining the situation i.e. your wife is in India and unable to send her PP to Ottawa. You would receive instructions, by e-mail, on how to send her PP to Canadian High Commission in India (New Delhi ?).
Also, one of the lines in my PPR said "If you or any of your family members are residing outside North America and you are unable to send your/their passport(s) to Canada and/or to provide a return mailing address in North America, contact us at CPC-CTD-Ottawa @ cic.gc.ca so that we can make arrangements to print visas at another office" - dont you see anything as such in your PPR ? - just curious - even you dont see these words in your e-mail, you can still do the same thing as i suggested above.
As always, feel free to post any questions here, and i am sure some one will guide you forward !!
Good luck.