why did maggie's day start worse?explain reasons for her irritations?(ch.9 book 1)

Maggie is in a bad mood because Tom has been favoring Lucy all morning, as she accidentally knocked over his house of cards. At Garum Firs, the children are sent outside and Mrs. Tulliver and Mrs. Pullet discuss the fight between Mrs. Glegg and Mr. Tulliver. At Mrs. Tulliver’s bidding, Mrs. Pullet agrees to visit Mrs. Glegg the following to try to sooth the tension.