Hi everyone!
Loooooooong time lurker in this case, and member of websleuths! I hardly ever post, but really wanted to chime in here. I personally think that after Longbeards, any phone activity was between SM and TM using Heather's phone. I think SM was driving Heather's car and took it back to her apt to leave there and started panicking. He then decided to leave the car at PTL. I think that TM may have been at home and came to pick up SM at PTL. I sadly don't think that Heather ever left Longbeards but her phone and vehicle did.
Nice to "meet" all of you, and I look forward to justice being served in this case!