The information from the Uptown Dallas Girl came directly from Jonni McElroy herself:
"I sat down with Jonnie McElroy, Christina’s mother desperate for answers on Wednesday, September 17. Two whole weeks after her daughter went missing. “I am in mission mode, I am going to find my daughter.” her mother stated. “It’s frustrating as a mother to not be given details about my own child’s whereabouts, we need awareness, we need help.” she goes on to say.
http://www.uptowndallasgirl.com/dallas-news/missing-woman-christina-morris-updates-and-how-to-help/
EDITED TO ADD
NEW INFORMATION-as of 9/18
-Christina sent a text at 3:36am to her boyfriend who was at home asleep that said “I can’t find the keys to the house.” after no response at 3:58am, 1 minute after the surveillance footage was taken, she sent another text to her boyfriend that said, “Can you please leave the door unlocked?” –As said by her mother “This means she must have gotten a ride with someone.”
Hope that helps.
Nope, it doesn't "help" to have bad info re-quoted as if it's reliable. It' s just a blog, not MSM, and LE swears it's wrong. (ETA - And, from earlier posts provided by others below, the family doesn't even talk to this blogger. So there's that.)
To top it off, the info you quoted with the time came from an "update" added a couple days later to this blog, not from the actual sit-down itself, so her update info could have been derived from something she heard anywhere. But even if it was something Jonni herself said, keep in mind that Jonni was simply relating what little she knew on 9/17, which at that point she didn't even know who was in the video with CM.
In contrast, LE's info is based on months of work, they had the phone of HF in hand, no doubt did a thorough examination of the various time stamps, and so on. It's a sworn statement, not simply someone talking off the cuff.