I don't know about 'modern' head canons and if we play long enough I might get here there but Christabel will be joining the 1916 rising, she will be joining the Stephen's Green muster station under commandant Micheal Mallin and his second countess Markievicz. She knew Markievicz reasonably well as the two had written but never met in person. She will 'go for a dress fitting' and instead run off, because she was a lady, and a rich one, she was probably stationed in the royal college of surgeons, shooting in the direction of the Shelbourne. Bel will kill a man on the Monday, and become a little sickened by the violence, and won't shoot again until the order for surrender comes. She will be imprisoned in Mountjoy, and then a few months in England, when her wealth and connections will see her released in less than 6 months. She will later serve in the Oireachtas as a member of Sinn Fein, until partition at which point she will leave the party and join the republican movement.


In modern times Christabel would be a member of the Oireachtas, probably part of the Sinn Fein or maybe even SDLP. she gives no fucks and is nototious for calling bankers into sessions and then giving speeches shaming them. Her twitter is fire.