What are the grounds for appeal against a finding that a minor who was sexually abused as a minor was not informed of her right to file a supplemental brief?

Appointed counsel for former minor and appellant J.L. asked this court to review the record to determine whether there are any arguable issues on appeal. (People v. Wende (1979) 25 Cal.3d 436.) Appellant was advised of her right to file a supplemental brief within 30 days of the date of filing of the opening brief. More than 30 days elapsed and we received no communication from appellant. We find no arguable errors that would result in a disposition more favorable to appellant. Thus, we affirm.