Landing of only Principal applicant

Hello,

Myself & Wife got PR visa. ( Date of Expiry is on May 10th)
Due to some medical complications, my wife is not in a position to travel to Canada before the visa expiry.

I am the principal applicant and planning enter Canada by May 1st week and complete my landing formalities.

Could you please advice if it is OK if only the principal applicant lands without the dependant?
Can I carry my wife's passport and get it cancelled during my landing process? Or do I need to send the passport to immigration office?
Later on, will I be able to sponsor her as my dependent and re-apply for her PR. Thanks for your advice.

I have sent a mail to immigration office and yet to receive any reply.

Thanks
Dileep