Bye Bye, Mme. Castelain

So my SVT (Earth Science) teacher, Mme. Castelain, is leaving us next week to have her baby girl! Our substitute until May, when she returns, is a man that nobody has ever met. Apparently all students ar predictable and the same in that we, like all of Madame's other classes asked immediately, "Is he young? Is he handsome? Is he funny and nice?" She gave us vague answers. My real question for her is what she will choose as a name for her baby! She and her husband refuse to tell anybody, not even her parents.