Open question: Daughter spoke grandmother into setting her name on letter of the house.?

My daughter, to urge and at the guidance of my greedy son-in-law, arranged to agree my mother in one week moment with it, their names on the letter of their house to set. The letter, while I found on-line, during it denied independently of it, what I asked, conditions, joint tenants with good reason of survivorsip. The house, was promised rather some years ago me after my mother death. It is not fantastisch and it is small, but it regards large memories as me. My daughter lives on the one hand in a 3 head a yearly, for her established and paid for by their husbands to bring out you. Their husband has unites for „acquired “profit to again-sell characteristics, already, and I believe that it is their intention to also do to this.