This is a crack-fic. Don't take it seriously. I never watched the season 5 finale, so I only know what happens from fanfics.
Ahsoka was standing in court when she was asked, "What do you plead?"
With a sudden rainbow of an idea, Ahsoka replied, "Innocent, by reason of insanity,"
Everyone looked at her in bewilderment then Ahsoka started singing a song about a pony unicorn.
She was sent to a mental facility for the rest of her life.
The End