While there is no widely indexed episode for a performer named "Nawelle" in this specific series, "Nawelle" (or Nawel) is a common French name. It is likely a specific, rare, or misremembered title for a scene featuring a performer of that name within the Banderos catalog.
The phrase specifically refers to the open casting call for the child actor who will play Vince Banderos’ son, a pivotal character kidnapped in the first act of the film. This role is so crucial that producers have spent over six months searching for the right young talent.
The last time an obscure indie film did a viral search for a child actor, the result was Room (Jacob Tremblay). That film won an Oscar. Will Nawelle be the next? Probably not. But the possibility is what keeps the casting machine turning.
