Compensatory Rights for Caretaker(s)

Hi, My case is that my caretaker, who happens to be a relative, bought the property eight years back in my name. Since then, she has been occupying the property, with my permission, and maintaining it smoothly. Since I do not stay in Delhi, I had authorized everything to her on my behalf since the beginning. In fact, water bills & electric bills come in her name and she has been paying smoothly both. Recently, I have decided to evict them fearing that they could claim ownership-rights on the property, even though they have not! However, they agreed reluctantly but with a condition. The condition is that I have to pay a certain percentage of the total amount of the property's original price as compensation. Her argument is that since I evicted them (along with her sister) prematurely without any benefit given for having maintained the property efficiently. My question 1. Is there any law by which she/they might file a case for the same against me? 2. If so, what am I going to do?