Describe the character of Mrs. Van Daan. Why did Anne not ‘get along’ with her?

Mrs. Petronella van Daan is the wife of Hermann van Dann and the father of Peter van Dann. She is described by Anne as being selfish, lazy, and whiney. Although Anne is not her daughter, Mrs. van Daan regularly comments on the way that Anne is being raised indicating that she is the result of bad parenting. Soon after they move into the Annex, Anne’s mother realizes that Mrs. van Daan is hiding supplies that should have belonged to the entire group. Mrs. van Daan becomes extremely upset when her husband insists that she must sell her fancy clothes, including fur coats, in order for them to help pay their way in the Annex.