The speculation about the video, is mute. Either the persons, she left with are not identifiable, or they do not have video of the two men and PH leaving together. We Know this information came from a friend or friends of PH. I wouldn't read anything into it. As for being apprehensive about the friends.....well, considering the HB case of late, I understand. I think the drug angle may have played a role, as the odds of someone abusing heroin truly recovering are slim to none.
Please understand that, this is only my opinion, and by no means do I intend to cast a shadow on the victim. I will say, that in this day and age, traveling with anyone you don't know is a risk. probably why we don't see a lot of people hitchhiking anymore. The text, is our biggest clue that something abnormal was happening. I can not imagine anyone sending a text like this unless they were already leery of the situation. Either in a place they did not want to be and feeling like they could not just walk away from it, or in route to somewhere other than where they thought they were initially going. I will also add that a bar of any type is no place for a recovering addict.
The best hope anyone in that situation has is to completely remove themselves from any environment that could trigger a relapse, including anyone who they have ever used with, up to and including immediate family. As harsh as that sounds, the odds of recovery without this important step, drop to almost 0.