Mrs. Platter

Mrs. Mabel Platter is the wife of Sidney Platter. She first appears in The Borrowers Aloft. Like her husband, she is a shrewd businessperson, and served cheap food at high prices under the title Riverside Teas. They later added a model railway, copying Mr. Pott.

She may have been married before, as she had an adult daughter living in London.

She is the one who seriously raises the idea of stealing the Clocks from Little Fordham. In The Borrowers Avenged, she becomes more reluctant to break the law, while her husband becomes more obsessed with getting them back by any means necessary.

The epilogue of The Borrowers Aloft says that the couple eventually went to live in Surbiton, near her daughter. The Borrowers Avenged contradicts this.

Description
She is a large woman with a pinkish complexion.