"Molly, you're not the only person at this table who cares about Harry," Lupin said sharply.
This is what soured me on Molly Weasley. It's never quite worn off. Hell, as much as I love Dumbledore, I didn't blindly trust and assume he always knew best.
Also if just a bit more information had been shared it's unlikely the events would have been as devastating at the end of the book.