Interesting but there are a number of question/responses that the person analyzing the girl says are definitive. But I see them as opinions. But, she doesn't sound all that credible.
Indeed, statement analysis can be useful and provide many insights to an interviewee's state of mind...particularly in a spontaneous interview. It would however, be interesting to know if Greta or her staff did a pre-interview with Ms. Hartely prior to the aired interview. In such cases, the areas of emphasis and much of the verbiage may not be genuinely the interviewee's but rather the result of steering which took place during a preliminary interview. For example, the person doing the statement analysis points out the seemingly awkward pronouncement about being "on the Mexico side" of the lake so early in the interview. On its face, that is curious and should be considered significant; however, if Greta or one of her staffer's had done a preliminary interview with Hartely and repeatedly asked her which side of the lake she had been on, and made a big deal of that, it would not be unusual for her to emphasize that in the aired interview.
I have no way of knowing if that's the case here, and frankly don't have enough info to feel comfortable making any kind of hard and fast opinion at this point...but regardless of what comes of this, the fall out will be interesting.