Our fathers trust was amended to include his caregiver. Before the caregiver amendment, not all children were to inherit evenly. Now the caregiver is to inherit 75 percent, and the children have a rest and residual clause that reads the reminder is left to my children and lists all names. We think the children were made evenly to make sure that the caregiver’s gift wouldn't be challenged. The caregiver has let us all know if we contest, that he will take us out of the trust with the No Contest Clause, and has also said that he had to convince our father to leave things evenly. Is this amendment the product of undue influence or the will of the caregiver? Is this amendment valid? Father was in his late 70’s and there was no independent certificate of review but was drawn by an attorney.