Quote 4
"Ron, we're the only ones who can end it! Please – Ron – we need the snake, we've got to kill the snake!" said Hermione.
But Harry knew how Ron felt: Pursuing another Horcrux could not bring the satisfaction of revenge; he too wanted to fight, to punish them, the people who had killed Fred, and he wanted find the other Weasleys, and above all make sure, make quite sure that Ginny was not – but he could not permit that idea to form in his mind – .
"We will fight!" Hermione said. "We'll have to, to reach the snake! But let's not lose sight now of what we're supposed to be d-doing! We're the only ones who can end it!" (32.14-16)
Again, in a time of desperation, Hermione's the only one who keeps the group on track – despite all of their grief over Fred, she reminds her friends that they must keep going, and that the end is finally in sight – if they can only get there!
Quote 5
"… the wand would be bound to attract trouble –."
"Only if you shouted about it," argued Ron. "Only if you were prat enough to go dancing around, waving it over your head, and singing, 'I've got an unbeatable wand, come and have a go if you think you're hard enough.' As long as you could keep your trap shut –."
"Yes, but could you keep your trap shut?" said Hermione, looking skeptical. (21.57)
Hermione brings up a good point here – one of the greatest dangers of having a ton of power is the temptation to brag about it and thus get yourself in more trouble than said power is worth.