Patty's Butterfly Days by Carolyn Wells

"Red Chimneys" was in a turmoil. The house party had been invited, and the house party had accepted their invitations, and all would have been well had it not been for Aunt Adelaide. Somehow or other she managed to upset every plan, throw cold water on every pleasure, and acted as a general wet blanket on all the doings of Patty and Mona.

She was not an over strict chaperon; indeed, she was more than ready to let the girls do whatever they chose; but she dictated the way it should be done and continually put forth not only suggestions but commands directly opposed to the wishes of the young people.