Howdid the girls know that Wanda liked them even though they had teasedher?

Thegirls came to know that Wanda liked them even though they had teasedher as she had asked Miss Mason to give the green dress with redtrimming to Peggy and the blue one to Maddie. Later when Maddielooked at the drawing very carefully, she realized that the dress hada face and a head, which looked like her own self. Thehead and face in the drawing given to Peggy looked just like Peggy.That is why the girls knew that Wanda liked them even though they hadteased her.