I guess you are sending your application to Buffalo. Check the checklist for Buffalo applicants:
http://www.cic.gc.ca/english/pdf/kits/guides/E37048.pdfFrom this you will get some idea, what documents of your spouse needs to be submitted. I guess you have to submit her education certificate/transcripts. For the job verification letter I am not sure.
Just my input in your query other members may input more.
Thank you.