Right on joint property

Hi,
I own a house jointly with my husband. We also have joint account to put our savings. My husband passed away few months back.
As per Section 44 of the Transfer of Property Act, 1882, the ownership of a property with "Tenancy by the Entirety" or "Joint Property" provides the right of survivorship. Upon the death of one joint tenant, his/her interest immediately passes to the surviving joint tenant. Ref-
http://legalserviceindia.com/articles/plaw.htm.
As per the same, when survivor is there, even the legal hier doesnt get right to that property.
Please let me know if anybody from his family(his mother) can claim anything from joint property.