«The Strongbox (NHB Modern Plays)» by Stephanie Jacob

A story of domestic servitude and abuse of power, as authoritarian Kat, her ageing mother, Ma, and their teenaged slave, Maudie, jostle for power — and affection — in their dilapidated London home.
The Strongbox by Stephanie Jacob was first performed as part of the 2018 VAULT Festival, London.
Also available in the collection Plays from VAULT 3.