Toroko is a hero since she never gave up Sue, a stranger.
If Toroko would have been given up Sue... Balrog and Misery would be taking Sue in the first scene.
Without Sue, Kazuma and Booster would never be rescued; (and be doomed to eat cockroaches...)
Quote would probably never meet Curly or Jenka...
And chances are Quote would stick with Jack, Toroko and King as their personal bodyguard, ensuring they probably survive. But, the rest of the Mimiga and Human population will probably end up enslaved by The Doctor!
I mean sure there's a chance things would have worked out without meeting Sue... But, I wouldn't hold my breath! King, Jack and Toroko knew nothing about the Red Flower.
So, at the most they would have tried to save the other Mimigas. At the least they would have just found a place to hide and live out their days...
At worst they would end up captured, and Quote would work for The Doctor or end up as critters and bits!