Tex. Hum. Res. Code § 161.108

The department shall review each of the department's pending guardianship cases at least annually to determine whether a more suitable person, including a guardianship program or private professional guardian, is willing and able to serve as successor guardian for a ward of the department. If the department becomes aware of any person's willingness and ability to serve as successor guardian, the department shall notify the court in which the guardianship is pending as required by Section 1203.151, Estates Code.