Teaching the word thankful

So, today I was explaining to Kate the word thankful. I was telling her it meant what you are really happy about.
She then told me she was super thankful for her little sister. Trust me, it isn't always that sweet in this house! That's why I had to record it on my little blog :)
But in the next breath she told me she was thankful we found Lily (Dora's little sister pictured below) omg! Really Kate!!