Who is the person in the glass coffin in The Regime?

The first two episodes of HBO and Sky Atlantic’s The Regime show that Chancellor Elena Vernham’s difficulties stem from something she tries to contain in the glass coffin she visits regularly. But who is in the glass coffin, and why do they have such a big effect on the Chancellor?

In Kate Winslet’s third HBO series, she takes on the role of Chancellor Elena Vernham, the somewhat dysfunctional authoritarian leader of a fictional European country. The political satire showcases that despite Elena presenting herself as a calm and strong leader to her nation, behind the scenes, she’s riddled with insecurities and mysterious illnesses, which seem to get worse each episode.