Whoa! We're going down a rabbit hole here. The Residential Tenancies Act is very clear - if the landlord also lives in the dwelling, it's not a tenancy within the meaning of the Act, and the "tenants" do not get the protection of the Act.
In this case it is very clear that the OP is genuinely living in the property and the RTA does not apply.
Section 3 (2) of the Act:
Subject to section 4(2), this Act does not apply to any of the following dwellings—
(a) a dwelling that is used wholly or partly for the purpose of carrying on a business, such that the occupier could, after the tenancy has lasted 5 years, make an application under section 13(1)(a) of the Landlord and Tenant (Amendment) Act 1980 in respect of it,
(b) a dwelling to which Part II of the Housing (Private Rented Dwellings) Act 1982 applies,
(c) a dwelling that is let by or to a public authority and without prejudice to the generality of the foregoing, including a dwelling provided by a public authority to an approved housing body other than a dwelling referred to in subsection (2A),]
(d) a dwelling, the occupier of which is entitled to acquire, under Part II of the Landlord and Tenant (Ground Rents) (No. 2) Act 1978, the fee simple in respect of it,
(e) a dwelling occupied under a shared ownership lease,
(f) a dwelling let to a person whose entitlement to occupation is for the purpose of a holiday only,
(g) a dwelling within which the landlord also resides,