Forster is a scientist that lives in a small castle connected to the academy via a drawbridge, and often appears on the premises of the school. She has made a name for herself in the study of artificial valkyrie, and seems to know a lot about the valkyrie race in general. She also seems to have a deep connection with the empire.
The mysterious scientist that also happens to be a sexy lady was, indeed, another anime stereotype that Valkyria 2 was missing.
The rest of the update is another video about Aban feasturing a runin with Juliana Eberhart, and a gameplay video showing how battlefield orders will work, that will be very familiar to the ones that already played Valkyria Chronicles.