5. The time you know that things are really working out is when
She is more likely to
Vary her volume and pitch: Her volume would be high at times when she is excited and interested with the talking and would lower a bit and rise again in a consecutive manner. And the pitch would be heard higher and more feminine than the pitch which is heard in normal.
Use self-markers: They try highlighting themselves more and more when they are actually interested and unconsciously they try to prove themselves as better.
Next: What she is less likely to do