It's been in the news, both TV and in Print; Honda did everything they could to notify owners. I heard of one, the guy was the 3rd or 4th owner and he got a notice. So you really can't say they aren't trying everything they can."so Honda appears to have done its job in attempting to contact her."
What else could Honda have done? I got my notice for my airbag recall on my 2007 Ridgeline and I am the second owner. At Honda's expense they put me in a rental car until the parts come in.
They want to see this fixed, and I will say they have really gone above and beyond the normal efforts.