"the tomb of Aphra Behn, which is, most scandalously but rather appropriately, in Westminster Abbey"

Aphra Behn is buried in the East Cloister of Westminster Abbey.

Memorials in Poets' Corner, Westminster Abbey
Creative Commons AttributionMemorials in Poets' Corner, Westminster Abbey - Credit: Herry Lawford, Flickr

She is not, however, buried in the part of the abbey known as 'Poets' Corner' where numerous other poets, playwrights, and writers are buried and commemorated. This is situated in the South Transept.