You cannot remove the tenant’s belongings if the tenant fails to move out as a result of her notice of termination. If she gave you written notice (9N form) including at least 60 days, signed, identifying the unit’s address, terminating at the end of a rental period, and they failed to vacate, you still have to file an application with the Landlord and Tenant Board to obtain an eviction order. The application and instructions for the L3 Application can be found on the Landlord and Tenant Board website at https://tribunalsontario.ca/ltb/forms/. The new tenants who are supposed to be moving in will not be able to do so and they could claim from you any costs they incur as a result of not being able to move in at the Ontario Small Claims Court.