Fecilia of the order of Baal

Fecilia, a newly minted 1st blade of the 'Angels fist' cavalry squadron of the Adepta Sororitas order of Baal rides out besides her sisters to act as a garrison for her tribes hill fort in the deserts of Baal secundus under her new sister superior Mariana, a Terran Francish born transfer from the order of our martyred lady. how will Fecilia and Mairana bond through thier missions?