She might get angry right back. Ginny is a strong - willed character. So, if Harry yells at her unjustly, she could stand her ground and yell back, not willing to be pushed around.
Sometimes, she could be hurt and run away. If Harry's words were particularly harsh, Ginny might be so hurt that she doesn't want to face him immediately and decides to leave the scene to collect her thoughts.
She might be shocked at first. Since Harry is yelling, which is out of character for him in many cases, Lily could be taken aback and not know how to respond immediately.
She could also become cold and distant. Instead of engaging in a shouting match, she might simply walk away and give Percy the silent treatment. This can be a powerful reaction as it makes Percy realize that his yelling has pushed her away and he has to make an effort to fix things.
Another reaction could be that Sakura becomes more determined. His yelling could fuel her desire to prove herself to Sasuke, whether it's in terms of her strength, her loyalty, or her understanding of him. So instead of being deterred, she uses it as motivation to grow and change in the eyes of Sasuke.
Ginny might be initially heartbroken. She could lock herself in her room and cry for days. After all, she loves Harry deeply. But then, she might become angry and start to focus on her own life more. For example, she could throw herself into her Quidditch career or her studies at Hogwarts.
Alternatively, Ginny could be very mature about it. She might respect Harry's decision, even though it hurts. She could choose to step back and give Harry the space he seems to need while secretly hoping that he will change his mind in the future.
She might be hurt at first. Since she's pregnant, her emotions could be more fragile, and Harry's anger could really sting.
Ginny might get angry and start to avoid Harry. For example, she could stop sitting with him at the Gryffindor table during meals. She'll be short - tempered when he tries to talk to her and give him cold stares.
Peter might be initially shocked and a bit scared. After all, Tony is like a mentor to him. But then he could become defensive, trying to explain his actions or point of view.
Ginny might be heartbroken at first. She could retreat into herself, spending a lot of time alone in her dormitory or in secluded places around Hogwarts. She may cry a lot and avoid socializing with their mutual friends.
Snape might initially be taken aback. He's not used to students standing up to him so forcefully. He could glare at Hermione with his cold, dark eyes, trying to intimidate her into silence.