Canada does not have a resident mission in Cyprus. The Honorary Consul in Nicosia will be completely unable to help.

The visa office with jurisdiction for Cyprus is Rome. If your mother requires a visa or needs to overcome an immigration impediment, that is the office to contact.

http://www.cic.gc.ca/english/informa...sions/rome.asp

If your mother is a dual-national Canadian citizen, she must enter Canada as a Canadian, and a passport is required, in which case the relevant consular section is the Embassy in Athens.