Yes, but pretend not to be

"Well," you say, "I guess my parents would want me to, so...yes?"
"Great!" she beams. "I'll give you my address and phone number." She bends over and writes them down on, giving you a fantastic view of her arse. Her voice grows serious, "I don't want you giving these to anyone. If you do..."
You reassure her, and then leave. It's not likely that anything would happen in your lessons, but...