"The only tasks we're assigned are cleaning, cooking, and laundry." Haibara is conscious of the fact this girl is clearly new. But at the same time, that's not exactly what she was asking, was it?

"I'm more taking responsibility. Most of these drugs are here at my behest, the least I can do is track how they're being used. Maybe keep some fool from taking the wrong pill and killing themselves."

.... Yeah she doesn't talk like a child.