The interview is behind me. The morning session went fine, actually - I volunteered to teach my lesson first, just to have it done. I'm really glad I didn't choose to teach the difference between a simile and a metaphor, because another girl covered that. If I try to be objective, I think mine was one of the better lessons. I spoke too quickly, but that always happens.
The group activity was awkward, because all of us were concerned with how we presented ourselves - no one wanted to seem too pushy or too quiet. The individual problem-solving "quiz" was okay.
The final personal interview was the hardest part. I think she (my interviewer) was frustrated by the lack of internet access, which kept her from seeing my resume. For whatever reason, we just never seemed to connect. I felt like everything I said was just hanging there, dangling with all its blunderousness on display.
So who knows. I'm not going to obsess over it, and I'm going to work on other applications while I'm home. I'll know by January 20th if TFA worked out.