Her name is Shan Oakes and she writes on her blog:
I'm looking forward to highlighting the Tories' hypocrisy on civil liberties.Isn't that what the Liberal Democrats should be doing?
Later. That is a bit glib. What we should be doing is pointing out that, while David Davis holds admirable views on liberty, there are many in his party who do not share them. We should also be exposing the way that Conservative taxation policies will favour the rich.