Who is Mrs. Wormwood from Matilda and what is their importance?

Mrs. Wormwood is Matilda's mother. She is a large woman who wears lots of makeup and who dyes her hair platinum blond. Her attitude toward her daughter is similar to her husband's. When she isn't ignoring Matilda, she is misunderstanding her and thinking she is a nuisance. Her two main interests are bingo and television and she devotes very little time or energy to anything else. She is so interested in Bingo that she sees no problem with leaving her four-year-old home alone all day while she leaves to play.