I got a younger sister.

Madeline had a somewhat romantic longing for having a younger sister and wished she had one. Apparently, there was a younger sister in the household of a count among their relatives who would follow after her older sister, complain that it was unfair, covet the older sister's things, monopolize their parents' love, and treat the older sister coldly. Upon hearing this, Madeline still could not give up her hopes for a younger sister and ventured to say, "Would you consider making the count's younger sister our adopted daughter...?" And then...?