He may also feel hurt. Since Hermione is one of his closest friends, being pushed away by her can be a big blow to him. This hurt could turn into anger if he thinks Hermione is being unfair or unreasonable. He might start to avoid her as well, which could lead to a rift in their friendship.
Harry could be initially confused. He might not understand why Hermione, who has always been there for him, is suddenly pushing him away. So he might try to talk to her to find out the reason.
On the other hand, Harry might respect Hermione's decision. He has always trusted her judgment. So, even though he is sad about it, he gives her the space she seems to need. However, he still keeps an eye on her from a distance, worried that she might be in some kind of trouble that she's not sharing with him.
He could be initially confused. Harry might not understand why Hermione is suddenly pushing him away. He might try to talk to her to find out the reason, but if Hermione is determined, he could be left feeling hurt and a bit lost.
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.
He might be initially shocked. Snape is used to students being intimidated by him, so Hermione's outburst could catch him off - guard. He may glare at her silently for a moment, trying to regain his composure.
Ron might be initially disappointed. He's always had a bit of a crush on Hermione, and this could be a blow to his ego. But if he's true to his character as we know him from the original series, he would respect her decision.
Well, in some fanfictions, Harry might initially be confused. He's used to Hermione being bossy but not this level of control. He could resist in a quiet way, like ignoring her suggestions more often.
Harry might struggle and try to break free. He is a brave character and doesn't like being restrained, so he would likely use his physical strength and magic skills, if possible, to get out of Snape's hold.
Harry could be heartbroken. He might isolate himself for a while, not wanting to see anyone or do anything. Just staying in his room, crying and reminiscing about the good times with Edward.
In some fanfictions, Harry might become very angry. He might feel that Ginny is being unfair or not understanding his situation. This anger could lead him to say things he doesn't really mean in the heat of the moment. However, deep down, he's really hurt and confused.
Hermione would likely be a mix of disappointed and worried. Disappointed because Harry is usually responsible, and worried because she cares about him. So she'd probably try to figure out why he got drunk in the first place.
She probably comforts him right away. Hermione is a very empathetic person. She might give him a big hug and let him cry on her shoulder.