In the cloud-capped highlands of Rwanda, even the rain-makers sound like crashing snobs. When two teenage pupils from Our Lady of the Nile lycée slope off to consult the sorceress Nyamirongi about some boyfriend trouble, she sizes up their genealogies and comes over all Mitford duchess: ‘You’re not from very good families. But nowadays they say it no longer matters.’ Like so much in Scholastique Mukasonga’s novel, it’s a comic…
