I had a different experience but it was decades ago. Unaccompanied child flew out to visit my sister. Outbound fine, return trip, problems. A stewardess took my daughter with her everywhere, fed her, hung out in the crew lounge. The airline got her booked to her destination and she was never left alone until she was handed off to a stewardess on the next flight. We were kept informed the entire time.
Late but not lost.