Maybe she was just looking for a fight, probably because of the shame she felt at being taken so unaware. Or maybe she needed it just a touch clearer what he meant by that 'we'. Protector and lover were two very different roles.
"I don't need a personal bodyguard, Fenris. I'm hardly that much of a wilting flower." It annoyed her to feel so helpless after being on her own for so long. The girl whose family hid her from the Templars was a distant memory. "You need not feel obligated to move to a city you loathe on my account."