Should I ask for first name?

they prob wont give you that info.. i dont know if they do that, but the school should have a directory on the website... if you really want to know then tell them in the email just what you wrote here... that this is a teacher you really liked and admired and want to see if you can contact her, and see if her first name is the same as the teacher you knew...... if so, or even if they dont wanna tell you, give them your information, and have them give it to her so she can call you if she wants