Hi Susan,
I don't go to your school and I don't do agility, so not sure how helpful this info will be at all. I do have rally run-thrus at my school (which I participate in), and it's not by invitation. You just have to fill out a form and send in the fee. You don't even have to be an active competitor. If you apply and pay, you are in. I would think it would be the same with your school and with agility.
Maybe your instructor was distracted when you talked to her or something. People are weird. And I find that (sometimes) when I talk to my instructors, they give me a weird vibe too (of course, I am easily intimidated

). Have you made friends with any of your classmates? Maybe they can give you some info on it.
I have other things I would like to type here, but am showing restraint (New Years resolution).
