Will Trust when everyone dies what happens

[LGR001]

My husband's uncle left all his money in trust to his only daughter. She is educationally subnormal. On her death when the trust is wound up the uncle left everything to my husband. My husband died some years ago and in his Will he left everything to me. On the daughter's death does her trust now go to me (my husband left everything to me in his Will) or does it go to the daughters/uncle's family? There are no relations left alive only a possible long lost cousin whose address we don't know. The uncles's wife was the sister of my mother in law. Can anyone enlighten me??