If your living arrangements require the tenant to share a kitchen with you as a condition of living in your home, then likely your situation would not be covered as a regular tenancy under the Residential Tenancies Act. This usually means that the renter is not a tenant and has very few rights in such situations.

If you feel you are being threatened by this person, then you may have to speak to your local police department about getting a peace bond (which acts like a restraining order) against him or her.

In the meantime, to protect yourself against any potential claims, you can write out a simple timeline of events showing when and what was paid to you, when the tenant moved in, the fact that he or she shares a kitchen with you, the problems the tenant has caused you, and any other details that are relevant to the tenancy. You may need this to show to the police or for any possible court hearing.