Place this clip at the moment a companion goes missing in your edit, before any reaction line lands. Follow it with the Cavalo Horse Sound Button when the animal finally appears, then cut back to the party regrouping for the next scene together.
About this sound
A short voice clip of Wander calling out 'Agro?' with a questioning lift, lasting just over a second. It feels searching and a little lonely, like a player scanning an empty plain for the one companion who always comes back. The call is from Shadow of the Colossus, where Agro is Wander's horse.