Md. Code, Family Law § 5–327

If, after a juvenile court grants guardianship, a party becomes aware that a condition of consent to the guardianship may not be fulfilled:

(1) the party promptly shall:

(i) file notice with the juvenile court;

(ii) give notice to all of the other parties; and

(iii) if consent was received from a governmental unit or person who is not a party, give notice to that unit or person;

(2) the juvenile court shall schedule a hearing to occur within 30 days after the filing of the notice; and

(3) if the party, unit, or person whose condition cannot be fulfilled fails to enter into a new consent, the juvenile court shall:

(i) set aside the guardianship order;

(ii) set the case in for a prompt trial on the merits of the guardianship petition; and

(iii) reopen the CINA case for review as required under Title 3, Subtitle 8 of the Courts Article.