Not usually. Probably about the best you'd get is a "Sorry, we made an error..." message.
I've had it happen before (on a much smaller scale).
It's really too bad for Helen, too, because I'm betting many of these people will come to their senses and NOT bid as high the second time around. I think some of them got caught "in the moment," and now that moment has passed.
I could be wrong, of course. But as far as eBay goes, they will not reimburse the money lost.