This is my first post to Web Sleuths, but I've been lurking and reading all of the threads up until this point. I grew up in the MB area and attended Socastee High School but moved away from the area to attend college. I never came back except for breaks and now live in a different state. However, still having family and friends in the area and visiting on occasion, I am pretty familiar with the area and the local culture. Some have posted that there is both the family vacation atmosphere and a seedy, party-town undercurrent in the MB area. I would agree with that. Reading the threads until this point along with browsing HE's SM accounts, I honed in on a couple of things and have three completely different theories. From her SM accounts, one can deduce that she was sometimes out into the wee hours of the morning or even the following morning with friends. This isn't unusual for someone her age in the restaurant business in MB. If you read her Twitter account around the June 1st timeline, you can also see that she reportedly went boating with several friends from the Tilted Kilt (hope this is okay, mods). Here are my theories (my opinion only):
1. HE returned to her apartment from her date and either went back out to meet someone at an unknown location or went to sleep. Perhaps she went to PTL the next morning to go boating with some friends as she has in the past. As previously mentioned, the weather was mild at that time. When she arrived at the boat landing, perhaps some other unsavory characters were already there. The explanation for the cell phone going dead would be a dead battery in this case. Depending on the phone, some have a very short battery life, and with lots of use, won't make it a full 24 hours without charging. If she was out on a date for a considerable amount of time, she wouldn't have had an opportunity to fully recharge it between 2am when she retuned and 3:41am for the last known usage. If she left to go back out, and her battery was already low, she may not have had an opportunity to charge then it either. In this scenario, I think it would be helpful for law enforcement to speak with any other Tilted Kilt employees who were also off work the same day as HE or didn't go in until the evening shift.
2. Most of the above theory with the exception of unsavory characters. Perhaps something happened with her friends or acquaintances, and they're not cooperating with police because they would implicate themselves.
3. HE returned from her date and decided to go out for whatever reason - to meet friends or get something to eat at a fast food restaurant. Regardless, she was spotted by an unsavory character and was carjacked or followed. Perhaps the perp lives in the Socastee area within walking distance of PTL, so the car was ditched there. This scenario brings UNC student body President Eve Carson to mind. She went out at 3am, speculation was to print a paper, and was carjacked by random perps in the area who spotted her (Sorry, don't have a link for this, but you can Google "Eve Carson").
Anyway, those are my thoughts. I hope and pray the Elvis family finds Heather soon. As a mother myself, I can only begin to imagine their pain and anguish.