I thought her purse was found as well, which is why I was so sure of foul play, as no woman goes anywhere without her purse, willingly. But if her phone and purse are missing too, that is more of a "hmmm." I am curious about recent bank activity. No one goes missing without access to funds, on purpose.
I still tend to think she has been harmed. She has a ton of baggage, apparently, and any number of people who might have meant her harm, certainly more than your average person would have. Of course that could also be a reason to flee.