Don't want to allow mother-in-law to stay along.

I own a property in Chennai (India). I have all the legal documents. I have allowed my mother in law (aged 87yrs) to live in a portion. I have also supported her financially for the past several years and I have all the documents to support this. My wife bought the house from my mother in law and I have now purchased it from my wife. Her other daughters have poisoned my mother in laws mind saying that she should file a case against me (civil and criminal) stating that I have cheated her.

Now my mother in law is staying in my house and wants to file some case against me. However, I cant see why I should allow her to continue stating there when she is clearly not getting good advice. If she wishes to file a case against me, that is OK, I have all the documents to prove that every transaction is legal. How can I evict her legally - given that she is becoming very ungrateful and clearly not thinking well.