Some things to ponder:
Maybe that story was 9 days late coming out, only to the public. Maybe she had already made that statement of dropping the laundry off to LE right off the bat, but of course they neglected to tell us about it, it only came up on NG.
It's possible that Ggma had not yet washed the clothes Mon. morning when Ron and Misty drove over there to get Haleigh's favorite outfit. Plus, she may not have wanted to do laundry on the Lord's day, many women of her generation don't.
How do we know that Ron and Misty actually drove over to get Haleigh's favorite outfit Mon. morning, since that came from Misty's mouth? Are we picking and choosing which lies are true lies now?
As for changing the time, I think it was TN who first said, 7 pm. then later it was stated as being between 7 and 8. Well, 7:30 is close enough, I don't think LE would haggle over a few minutes difference.
Personally, I believe her. Grandmas are notorious for doing extra things for their children and grandchildren. My mother did it for us all the time when I was single. A barely 17 y.o. girl is probably not going to take the time to check for stains, turn things right side out, and pretreat like an older woman would. (I didn't trust my stepdaughter to do the laundry either, she had a tendency to stuff wadded up clothes and socks in the washer without shaking them out or emptying pockets. Rather than gripe, I just did it myself.)
Okey-dokey... just giving y'all some things to think about.