Insured, then 11 years old, suffered brain injury and motor disabilities in school bus accident — Representative of insurer felt that it would be benefit for insured to have parent involved in her care — From October 2006 to September 2007 insured's mother took unpaid leave from her full-time employment to look after insured — In September 2007, mother negotiated with her employer to work at 35 percent of her former salary, allowing her to work around insured's appointments — Insurer reimbursed mother for income lost up to fall of 2007 when insured was expected to return to school full time; insurer considered this to be ex gratia payment authorized by s. 206 of Automobile Accident Insurance Act — Insurer notified mother that it would discontinue payment at beginning of school year (decision letter) — Insured appealed to appeal commission seeking payment for difference between mother's salary prior to collision and what she earned at reduced hours — Insurer wrote to mother claiming to withdraw decision letter and made offer to settle on ex gratia basis, provided that appeal be withdrawn and final release be executed — At hearing, mother stated that she had not accepted settlement and wanted appeal to continue; insurer argued that decision letter had been withdrawn and therefore right of appeal no longer existed — Commission held that appeal was that of insured and could not be discontinued without her consent and ordered insurer to make payment for net wage loss — Insurer appealed — Appeal dismissed — Offer letter was clearly not unconditional agreement to settle; it required signed release and payment was on ex gratia basis — Acceptance of offer would have left insured with no basis for further claim, had further need for her mother's extended care become necessary — Mootness of issue does not necessarily deprive adjudicator of jurisdiction over appeal, but is matter of discretion — It was within commission's jurisdiction to hear matter despite settlement offer.