"Do you want me to stick around in the parents' lounge?" I asked the teacher. "Just in case?"
"No, just go. Wallie will be fine," she said as she pulled Sobbing Wallie away and wrangled her back inside. "We'll call you if we need you."
I just noticed that my cell phone number (and my email) is incorrect in the directory. Great.
Hang in there Wallie! Only an hour and a half to go!
Update: I got to school a few minutes early and spied on Wallie on the playground. She was playing happily in the sandbox next to one of her teachers. ...It's going to be okay.