It is likely that if she is the school counselor that she will talk with you a few times and then refer you to someone out in the community. Just go back and admit that you count calories and whatever else. Everybody lies to counselors, you know. It's part of the deal because everybody who sees a counselor comes to realize they've been lying to themselves.
Female, 5'3", 49, Starting weight: 163lbs. Current weight: 135 (more or less).
Starting squat: 45lbs. Current squat: 180 x 2. Current Deadlift: 230 x 2