[muggleview]

Apart from the Chocolate incident in the library, Harry and Ginny already started one-two punch lines, which is not as intense as the bickering of Ron and Hermione, but kind of showing what kind of communication they will have in their future life. Harry is getting caged!

"Hi," said Ginny uncertainly. "We recognized Harry's voice-what are you yelling about?"
"Never you mind," said Harry roughly. Ginny raised her eyebrows.
"There's no need to take that tone with me," she said coolly. "I was only wondering whether I could help."
"Well, you can't," said Harry shortly.
...
Though clearly struggling to understand what was going on, Ginny said immediately, "Yeah, we'll do it"
OOP Ch 32
(Ginny is very adamant. She just had to be there for Harry. Harry cannot not agree).

"Okay," Harry said irritably, roundoing on her, "first of all, 'we' aren't doing anyting. If you're including yourself in that, and second of all, Ron's the only one with a broomstick that isn't being guarded by a security troll, so-"
"I've got a broom!" said Ginny.
"Yeah, but you're not coming," said Ron angrily.
"Excuse me, but I care what happens to Sirius as much as you do!" said Ginny, her jaw set so that her resemblance to Fred and George was suddenly striking.
"You're too-"
"I'm three years older than you were when you fought You-Know-Who over the Sorcerer's Stone," she said fiercly, "and it's because of me Malfoy's stuck back in Umbridge's office with giant flying bogeys attacking him-"
OOP Ch 33
(Despite Ron's interference, Ginny was talking to Harry. In Sorcerer's Stone, Harry fought Quirell/Voldemort one-on-one, so it's Harry she's referring to)

"Okay, fine, it's your choice," he said curtly. "But unless we can find more thestrals you're not going to be able-"
"Oh, more of them will come," said Ginny confidently, who like Ron was squinting in quite the wrong direction, apparently under the impression that she was looking at the horses.
"What makes you say that?"
"Because in case you hadn't notice, you and Hermione are both covered in blood," she said coolly, "and we know Hagrid lures thestrals with raw meat, so that's probably why these two turned up in the first place...."
…
Harry turned. No fewer than six or seven thestrals were picking their way through the trees now…
OOP Ch 33
(Ginny can find her own way, Harry. You cannot stop her from following you. Hermione was there as well, but she did not have anything to say).

"Okay, listen," said Harry, stopping again within six feet of the door. "Maybe...maybe a couple of people should stay here as a-as a lookout-"
"And how're we going to let you know something's coming?" asked Ginny, her eyebrows raised. "You could be miles away."
OOP Ch 34
(Harry then decided not to follow his original idea)

"What was that about?" whispered Ron fearfully.
"I think it was to stop us knowing which door we came from," said Ginny in a hushed voice.
Harry realized at once that she was right.
OOP Ch 34
(Harry found a new reliable advisor. Hermione was there, but she was dumbfounded)

"Keep going!" said Harry sharply, because Ginny showed signs of wanting to stop and watch the egg's progress back into a bird.
"You dawdled enough by that old arch!" she said crossly, but followed him bast the bell jar to the only door behind it. OOP Ch 34
(Ouch! Harry could not reply)

"Ginny?" Harry said fearfully. "What happened?"
But Ginny shook her head and slid down the wall into a sitting position, panting and holding her ankle. OOP Ch 35
(Harry already knew Hermione was unconscious, and didn't care much anymore. He never knew Ginny's condition before. Now he was very concerned)