Leah was not going to lie, she was way scared of being exposed so easily to the third person which she had been trying to hide from everyone.
If Leah was appalled, Leena's brain was mulling over only one thing that someone has rambled. Worst plan? He dared to insult my brilliant strategy.
Emerging out of the shadows, he walked towards the two pirates trying to carry out big thievery without knowing they were being followed. What kind of thieves discuss their plan without looking into the surroundings.
"I am telling you, Leah. Even a children's plan is much better than her's." He stressed each word to provoke someone and he successfully did it when he saw an angry little kit.