I'm pretty sure that she stayed at the center overnight.
It's over an hour's drive between Albuquerque and Jemez Springs, so to arrive after 6:30 and leave at 9 wouldn't make a whole lot of sense and would almost certainly have been remarked upon by the center's director who said she was in a good frame of mind. Also, 10/14 was a Saturday. Assuming that Ingrid worked a regular work week, she would likely want to maximize her time off as opposed to arriving on a Sunday.
An article from another source says that she "visited a meditation center in Jemez Springs days before she was reported missing" and the quote from the husband says she left in the morning, but doesn't actually mention the date: "She left the house very early in the morning, around five, 5:30 a.m. She told me she was going to the Bodhi Manda Zen Center in Jemez Springs, where she's lived at before, stayed many times and even stayed over there the week before for convenience because she works up in Los Alamos every once in a while."
"Hunters flagged down the people who were towing her car, and said they talked to her. She had a flat tire, and the back window of her car was smashed out," Ingrid's husband told KOAT.
www.koat.com
IMO, it's not really suspicious so much. It's just miscommunication between the husband and the reporter. Watching the KOB4 video report, the news channel seemed more focused on the 'human interest' aspects of the story (how the couple met, video of them playing music together, discussion of the house they recently bought) and not the actual facts.