Few people other than bat specialists know much about bats, so that was a bit of a cheeky comment from the rescuer.
I think its worse than cheeky, more like unhelpful and seeming to be blaming Buffy, she could have been more positive and given advice on dealing with these situations and what to watch for, which I hope she did???
You don't always know when to step in, I once saw a hare in the grass up the track, didn't quite look right but called the dogs and left it (they hadn't gone near it, just knew it was there and looked from a distance), it was still there later, I expected it to run away when i approached but it didn't, so I put it in a box and took it to the vets, it died before I got there. How I wish I'd looked closer earlier. But it could have been doing the hare thing and just staying still? how was I to know it was dying?
Who know, there may have been something wrong with your little bat, she may not have made it anyway?
As said by others I too have learned from this post
Thanks for posting Buffy, you acted when pointed in the right direction, we can't all be experts :-)