ego dormio et cor meum vigilat

Please pray for her mental health as she was already fighting a mental battle before that and is now getting worse. Please pray for her garden to grow back with flowers and trees.

so here's a little excerpt from an article that the Vatican published about it, along with some links about the entire thing:

Not too long after, Mother Teresa of St Augustine shared with the four oldest choir sisters with whom she lived a proposal to invite the entire community to offer their lives for the salvation of France, in imitation of St Teresa of Avila who reformed Carmel for that express intention. She understandably met with immediate resistance. After all, who in their right mind would voluntarily submit themselves to instant decapitation by the newly inaugurated guillotine? Remarkably, however, within the space of a few hours, the two senior nuns begged their Prioress’ forgiveness for their lack of courage. This opened the way for Mother Teresa to propose an act of self-offering to the other members of the community. As of November 27, each nun daily recited an act of self-offering for the salvation of France written by the prioress. Eventually, an intention was added for the release of those who had been arrested and that fewer people would be guillotined.

...

...the nuns’ voices singing the Divine Office floated through the streets of Paris as they were paraded toward the executioner’s block. The executioner also allowed the nuns to complete the prayers for the dying, which included the singing of the Te Deum. After the subsequent singing of the Veni Creator Spiritus, and the renewal of their vows, the nuns went one by one to the scaffold, received a final blessing from their Prioress, kissed a statuette of Our Lady, and followed the sacrificial Lamb.

Here's another quote, from a website named Devotion to Our Lady

Cloaked in their white mantles and with hands bound at their backs, the sixteen recollectedly boarded the tumbrils that would bring them to Place du Trône Renversé where the guillotine awaited them. Along the way, priests disguised as sans-culottes gave them absolution. The journey was long… but the air was permeated by their solemn chants of the sixteen, singing as they did in choir: “Have mercy on me, God, in your kindness. In your compassion, blot out my offense…. Hail, holy Queen, mother of mercy….” Before their execution they knelt and chanted the "Veni Creator", as at a profession, after which they all renewed aloud their baptismal and religious vows. ​ The guillotine had been standing for more than a month already at the Barrière du Trône (Place du Trône Renversé; today it is called Place de la Nation). Upon arriving there, Sr. Constance suddenly accused herself before Mother Thérèse of not having finished her divine office. Her superioress told her: “Be strong, daughter! You will finish it in Paradise!”

you can read about it more here: