My verdict
Based on the second preview, I think that she's definitely ticklish on her upperbody, not so ticklish on her lower body (I like Laughter is beatiful clips very much but I think the foot tickling techniques need a little work), and probably by the end of the clip, she's "tickled out", perhaps even built up a resistance, which I'm sure anyone who's tickled alot of girls knows that some girls ticklishness comes and goes. If I remember correctly, these clips are pretty long, so I could see a girl tapping out before the end (in fact, it happens all the time in videos......some of the TC videos the girl peaks earlier than later).
Anyhow, really cute girl, I'll definitely pick it up soon!