to my knowledge, you can use a CSE to send any extra information around your file or clarifications
check this thread
http://www.canadavisa.com/canada-immigration-discussion-board/case-specific-enquiry-providing-additional-documents-after-submission-t346322.0.html
to be honest i dont think this should be a problem . because if this was your (main applicant )or your spouse name than that would have made difference/impact on your application but this is not something that would harm your file, but thats just my opinion , if you still think this is something that you wanna communicate to IRCC then raise a CSE .