Mira is a partner in Gowlings’ Montréal office in the area of environmental law and is leader of the firm's Environmental Law Group. She advises clients from all industrial sectors, including mining, chemical, oil and gas, renewable energies, pulp and paper, transportation and waste management. Her practice comprises analyzing the impacts of jurisprudential and legislative developments on her clients’ activities, advising on compliance with environmental laws, cap-and-trade regulations, environmental permitting issues, land rehabilitation and remediation projects, the implementation and closure of industrial sites. She also negotiates and drafts environmental contractual clauses pertaining to commercial transactions and land rehabilitation agreements and supervises environmental due diligence of business transactions. Mira was successively secretary, vice-president and chair of the Québec Branch of the Environment, Energy & Natural Resources Section of the Canadian Bar Association, and is currently Vice-President of the Executive Committee of the CBA's National Environment, Energy and Resources Law Section, and a member of CREW and CPEQ. She has been recognised by The Best Lawyers in Canada (environmental law) (2013–2016).