There are 2 things about this case that bug me.
1) I have a very low opinion of people who sell multi-level marketed anything.
After meeting and working with dozens of people doing so over 3 decades, never met one making a living at it who did not have the ability to lie through their teeth and/or to themselves. Both Travis and JA met at a cultish convention(in my view all MLM conventions are cultish) for their multi-level marketed service.
2) Travis seems to have severely underestimated JA, but I have a hard time seeing him as being totally naive. My view of people who wind up in dysfunctional relationships of this type, are not so one-sided. While JA may be psycho, there is something missing with the Travis side of the equation.
When looking at dysfunctional relationships of many people of both sexes, and hearing judges and psychologists remark about the same thing, you will find that "likes", not "opposites" attract, whether it be co-dependents or other bizarre mutual attractions. So, while JA's depiction of Travis may be a calculated strategy with exaggerations and fabrications... even without her saying a word, I just don't buy that Travis had no clue about JA. In other words, I think he knew he was playing with fire, he just never expected to get burned. Not that anyone should deserve such a fate! Most of us have a boundary system that raises red flags, and keeps people like JA out of our lives. Dysfunctional relationships usually occur when this boundary system is broken, and people allow dangerous people intimately into their lives. Point being that there was more going on here than JA being a nut.