Although the delayed reaction is suspicious, it does fit in with Jiro forgetting to give Yuffie a result as well.
Jiro probably assumed that since Noctis died a result should not be given, and maybe he changed his mind later. Or he just plain forgot because you know, it's Jiro.
For now I'll believe the claim. I guess we'll just have to wait and see if Leila ever gets an Innocent result.