If that wasn't a fluke [lit: talent/ability was the real thing], it could drastically reduce the losses we take from monsters.
I'm planning to hire a personal pharmacist.
Therefore, I'd like the three of you to make me a potion each. [TL: Literal is "I'd like three people to make potion(s)"]

'The three of you' means me too...?

Yay! I get to make potions before doing chores!
*shiiine*

Of course. [TL: Kashikomarimashita!]
... However

Our youngest sister, Rune, is still a novice.
Although she can produce a lot of potions, they're low-quality. When we were younger, our mother was very troubled by what to do about this...
It's inferior to our (atashi) talent.
It's impossible for her to meet Lord Duke's expectations...