This always seems to be elided in all those, let's talk about writing and the Middle Ages... OMG, women couldn't write or part of book production, how can you make that argument narratives....
I have always been like, "what is this weirdo slight of hand, Clanchy and co." that does this, women couldn't write, but they taught the psalter, but that meant they could only read and write the vernacular BS. The psalter.... the book of hours.... hmmmm.