To determine your rights in this specific situation, you should consult with a qualified legal professional who can provide advice tailored to your circumstances and the laws in your jurisdiction.
However, I can offer some general information that may be helpful:
Ownership of the Property: Since you mentioned that your grandmother owned the property and has passed away, the property may now be part of her estate and subject to inheritance laws. Depending on the laws in your area, the property may be distributed according to her will (if she had one) or intestate succession laws (if she did not have a will). In either case, the ownership of the property should be legally determined.
Right to Evict: Generally, only the legal owner of the property or someone with legal authority (such as a court order) can evict occupants from a property. As the grandchild of the owner, your rights to take actions regarding the property may depend on the inheritance laws and any will or legal documents left by your grandmother.
Tenancy or Occupancy Status: If your aunt and her family have been living on the property for an extended period, they may have established tenancy rights or some form of legal occupancy status. This could affect your ability to ask them to leave.
Mediation and Communication: Before considering any legal actions, it may be beneficial to try and have a calm and respectful conversation with your aunt and her family. Express your concerns about their behavior and try to find a solution that works for everyone. If necessary, a neutral mediator or family counselor could assist in resolving any conflicts.
Legal Advice: Given the complexity of property ownership and tenancy laws, seeking advice from a lawyer is essential to understand your specific rights and options. They can guide you through the legal process and help you understand the best course of action based on your situation.
Remember, laws regarding property and tenancy can be intricate, and it's crucial to consult with a legal professional to ensure you understand your rights and responsibilities fully.