The property was purchased by your mother and she was the guardian. But now as you are a major you have full control of the property and nobody can sell it without your consent and if sold it would be a nullity. Therefore apply to transfer the property in your name and removing your mothers name as your guardian.
You have to declare that as you have become a major you need to have full comtrol of the property. She does not have any role as of now. These applications would be filed atthe registrar office.