I have found that while a few primarily European works such as the following discuss Weil and Woolfe, they do indeed appear not to provide any comparisons of the two:
Del Serra, Maura. "Le Mie "Eccentriche": Lasker-Schüler, Kolmar, Weil, Woolf, Masfield, Guidacci." Le Eccentriche: Scrittrici Del Novecento. Eds. Botta, Anna, Monica Farnetti and Giogio Rimondi. Asteres. Mantova: Tre Luna Edizioni, 2003. 81-94.
Fabbri, Moreno, and Daniela Marcheschi, eds. Scrittrici Del Novecento Europeo : Karin Boye, Else Lasker-Schüler, Gianna Manzini, Virginia Woolf, Simone Weil, Marina Cvetaeva. Pistoia: CRT, 1998.
Fusini, Nadia. "Simone." Hannah e le Altre. Torino: Einaudi, 2013. 17-48.
Gaeta, Giancarlo. "Woolf, Weil, Hillesum: La Libertà Di Pensare Le Cose Come Sono " Lo Straniero 1.1 (1997): 87-98.Mutter, Matthew D. "Poetry against Religion, Poetry as Religion: Secularism and Its Discontents in Literary Modernism." PhD. Yale University, 2009.