She could be initially speechless. It's such a big moment that she might not be able to find the words right away. But her eyes would surely show her excitement and love for Harry.
Ginny would most likely be extremely happy. She has deep feelings for Harry, so his proposal would be a dream come true for her.
The Weasley family would be overjoyed. Molly Weasley would probably start crying tears of happiness and immediately start knitting things for their future home, like warm sweaters and cozy blankets. Arthur Weasley would be proud of Ginny and happy to have Harry as part of the family. He might even give Harry some old family wizarding artifacts as a sign of welcome.
He could also feel a great sense of anger. After the shock wears off, he might lash out at Ginny, demanding an explanation for her actions. His anger could be so intense that it might cloud his judgment for a while.
Ginny might initially be heartbroken. She could retreat into herself, feeling betrayed and confused. In some fanfictions, she may cut off all contact with Harry immediately.
She might be heartbroken. Ginny could initially be in shock and disbelief. She may retreat into herself, spending a lot of time alone in her room, crying and trying to understand why Harry would refuse.
Ginny could be heartbroken. She might initially be in denial, thinking that Harry will change his mind. She has loved Harry for a long time and expected a future together, so this refusal would be a huge blow to her emotions.
Ginny could be heartbroken. She might have expected to marry Harry after all they've been through together. She could initially go into a state of shock and disbelief, not understanding why Harry has refused.
Maybe she hates it because it often distorts the real story and characters. Fanfiction might create out - of - character situations for her or Harry, which she can't stand as she values their real relationship and the original story so much.
She might be hurt at first. Since she's pregnant, her emotions could be more fragile, and Harry's anger could really sting.
Harry might immediately rush to her side and comfort her. He could put his arm around her and ask her what's wrong in a gentle voice.
Ginny might be overjoyed. She could blush deeply and then give Harry a big hug, telling him she feels the same way.