They found the tortoise and did what was right to find the owner.Arg! Craigslist for re-homing any animal I believe is not a good thing...
Better to contact local rescue groups.
Then posted in her neighborhood Nextdoor app and found someone to take it in either while the owners are found or to give a permanent home.
Don't see where you offered any help only complaining. Not the right thing to do at least on this thread!