Kristen Stewart Affair Might Not End Director's Marriage

We do not know which lawyer she hired, but the picture (above) was taken Tuesday in the lobby of a Century City office building in which a number of divorce lawyers practice -- including disso queen Laura Wasser. By the way ... how hot does Liberty look?

Sources connected with the couple tell TMZ ... although Liberty has lawyered up, her end game is NOT divorce. In fact, Liberty and Rupert have already been to a marriage and family therapist. Our sources say, when they were photographed together on Tuesday in Beverly Hills , they were coming out of an office building where they met with the psychologist.