Just a theory....what if Heather and SM never even had an opportunity to actually speak to each other that night, but SM left her a long voicemail and when she couldn't get him, she also left a voicemail, maybe even it was her who suggested PTL. But, instead of SM receiving the vm, it was TM, who became enraged, especially if Heather mentioned him leaving TM. TM could have decided she would be the one to show up at PTL, maybe forcing Heather into her truck, throwing Heather's phone in the river and taking Heather back to have it out with the three of them. JMO