Why did Ivan the Terrible mother take over Russia?

Ivan the Terrible's mother, Elena Glinskaya, effectively took control of Russia as regent after the death of her husband, Grand Prince Vasily III, in 1533. Ivan was only three years old at the time, and Elena acted to protect her son's interests against the powerful boyar families vying for influence. Her regency was marked by efforts to consolidate power and stabilize the realm during Ivan's early years, before he eventually took full control as tsar. Elena's leadership helped lay the groundwork for Ivan's later reign, despite the tumultuous political landscape.