She has a blog herself. I keep waiting for her to ask me for something only available in Stockholm but that hasn't happened yet.
Have only browsed Letters to Francesco Datini by Margherita Datini, but I love what I've read. Such a relief to read an actual medieval woman's words about her life instead of a bunch of assumptions of what such a woman would know or what she would talk about. The letters are from the late 14th century. I'll quote them soon.