Her position on the Board of Control gave her an automatic seat on the Metropolitan Toronto Council. Greene's first campaign was centred primarily around a zoning issue: she opposed a municipal bylaw restricting cohabitation by people unless they were related or one person was an owner (she and her female housemates had been threatened with eviction under the terms of this bylaw). Greene also argued that she would speak for the rights of women, single persons, tenants and salaried workers. One of the first issues she was involved in was the Ambulance service. She fought a "one woman war" which resulted in the amalgamation of ambulances services in Metropolitan Toronto and the establishment of the Toronto Ambulance Service.