Hi higherlove
Based on the pattern of their toxic relationship, I truly don't. He told his best friend about the May 26 argument. The friend asked if he was afraid. Travis said "no she's a psycho but she's harmless."
I suspect she called, he saw her number and returned her calls. She's a sociopath. Not many people have the tools to deal with such highly manipulative people. Once he calls I'm guessing she either starts babbling about some made up problem she needs his help with or turns up the flattery . Maybe phone sex? Maybe she heard enough from asking him questions to satisfy herself that if she were to go through with her plan that he'd be home, not out of town or have guests for some reason.
Are you talking about the same best friend that JA had a pretty cosy pic with in what looked like TA's kitchen(AD), who was also friended with her on Myspace even after the murder? Sorry but TA struck me as a bit of a braggart when it came to the ladies but he wasn't exactly a kiss and tell type as evidenced by his discretion when it came to being called a virgin(imo that was to protect DR's reputation, not his). Just because he allegedly called JA a nymphomaniac to a friend or two means nada, I would think anyone willing to give it up outside of committed relationship in that culture would have garnered the same title. Plus none of us really knows exactly what the extent of their sexual relationship consisted of beyond JA's words/lies and the couple of times that TA himself mentioned during their chats. Heck, it could have been 99% talk and the rest basic groping, grinding and the occasional h/bj's and over the course of two years of her trying for more!