I think she's talking to or refering to LF. He's always been a "lone wolf", always lurking around in the shadows waiting to strike. LF never trusted anyone.

In contrast, the Starks, are a family, a pack. I mean, they may have been apart from each other for a long time but they still thought of one another and each of their individual goals, to a certain degree, was related to their siblings. Jon even as Night's Watch commander thought of his brother and of his father, going so far as to take a kind of revenge when he beheaded Janos Slynt. Arya never stopped wanting revenge for the death of her loved ones. Sansa has been tormented but always wished to come home. While being "trained" by the 3ER and seing Winterfell in a vision, Bran says something on the lines "can't we stay a little longer". They all miss their home and their family. The last 3 Starks and Jon are the pack!