Since no one in the Winterbottom family knows when and why Mrs. Winterbottom is coming back, they all react differently. Phoebe is both mad and scared, probably since she knows that Mrs. Winterbottom is going to come bak with the "lunatic", Mike. Phoebe thinks that her mother is having an affair. Prudence, on the other hand, is very excited that her mother is actually coming home. I guess it's because she doesn't know as much as Phoebe. Mr. Winterbottom's reactions, however, are a mix of Phoebe's and Prudence's. He's scared and confused, yet happy.
Mrs. Partridge's visit with the girls shows that the messages in the white envelope were actually with good intentions. Mrs. Partridge had Mrs. Cadaver copy down the good quotes from the newspaper and put them into an envelope, which Mrs. Partridge then left on the front step of Phoebe's house. When Phoebe and Sal see that it was Mrs. Partridge leaving the messages, they know that it wasn't the "lunatic" trying to mess with the Winterbottom family. I think that the quotes were actually a good idea. However, I think Mrs. Partridge should have shown who it came from or that it had good meaning.