I think the analysis comparing AF flights to RPT availability is amiss. The Father in this case had been driving three round trips to Adelaide from Mount Gambier per week for ten weeks. The cost of a return RPT ticket on Rex varies today between $256.20 and $986.60 depending on ticket type. Assuming the Mother needs to accompany her Daughter, that's $512.40 per trip, $1,537.20 per week using the cheapest ticket option. Who could afford that?