Your aunt can not sponsor you under the federal system and ON PNP had no family stream last time I checked so you are out of luck. Your immigration options:
http://www.cic.gc.ca/english/immigrate/index.aspSkilled workers and professionals if you or your husband can pass 67 points (you get bonus points for aunt) and has at least 1 year experience in the last 10 years in one of the 38 chosen professions OR have a job offer (AEO)
Quebec selected skilled workers if you pass their self assessment
PNP if you have a job offer from that province (AEO)
You could also try for a temporary work permit and immigration later. Maybe the aunt can through her connections in Canada help you arrange a job offer.