Property And My Parents Retirement Amount

Hello. My name is Anand Singh from Kanpur. I work here in Pune. I'm married to Smita Singh. Recently I knew my Inlaws have an eye on my property and my parent's retirement amount. From her last visit to my mother-in-law's operation, I observed some behavioral changes in him. Her suspicious talks on some occasions made me crawl the root cause. Through her call recodings, I discovered their clear intentions. Yes, they were talking about taking complete control of our life after my parent's retirement. Literally, I was shivering to know their intentions. It's been hardly 2 years of our marriage. In this meantime, I always maintained relationships with all concerning persons. We both live together in Pune far away from our hometowns. I have always been caring and honest to my wife. Such intentions disturb me quite often. I can't share these painful thoughts with someone close even. It resisting my productivity on my work. Don't want to hurt anyone especially my parents. Please give me some advice.