Okay, I know she's not the most reliable source but here is what Tammi said on NG last Friday about the Victoria pings:
CASAREZ: Talk to us again about your thoughts about Victoria, Texas. There`s not a date on this. And when do you say her cell phone pinged in Victoria?
T. SMITH: They said it was on the 27th. And that was the day that she sent the text that he was dead and that was the day that she wouldn`t speak to me verbally.
CASAREZ: OK. That`s the day that she did leave on the bus from San Antonio to Florida?
T. SMITH: Yes.
CASAREZ: So you`re saying she had to go to Victoria and come all the way back to San Antonio?
T. SMITH: Correct. She went two hours south and then came back up to get on a bus.
Here's the link:
http://transcripts.cnn.com/TRANSCRIPTS/1001/08/ng.01.html