Snape would probably be quite disdainful. He's not the type to be interested in fanfiction. He'd likely scowl and tell Hermione to focus on her real studies like Potions and Defense Against the Dark Arts.
Snape would probably be quite surprised at first. Hermione is known for her academic prowess and self - sufficiency. His reaction could range from being dismissive, thinking she should be able to solve her own problems, to being intrigued by the nature of her request. If it's something related to the dark arts or a mystery in the wizarding world, his interest might be piqued, but he'd still be guarded in his response. He might even try to use her request as a way to gain some advantage or information for himself.
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.
Well, Snape is a rather strict and no - nonsense teacher. He might be initially shocked or appalled. He could give Hermione a stern lecture about focusing on proper academic work instead of fanfiction. Maybe he'd even deduct house points if he thought it was a waste of her time or inappropriate.
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.
Snape might be annoyed at first. He's not exactly the warm - and - fuzzy type, and having a kitten - Harry around could disrupt his usual routine.
Snape would likely be initially suspicious. He's not used to Harry coming to him for help or sharing secrets. But once he realizes the seriousness of what Harry is saying, he might start to see Harry in a new light. He could be grudgingly helpful, still maintaining his cold exterior but secretly starting to feel a bit more protective of Harry.
He might initially show annoyance. After all, Hermione is often seen as a know - it - all in his eyes. But his sense of justice and his underlying good nature (despite his cold exterior) would kick in. He'd untie her in a rather brusque manner, but then start to question her about how she got into this mess. Depending on her answer, he might offer some cryptic advice on how to avoid similar situations in the future.
Hermione would probably be very confused at first. Snape has always been a rather intimidating and strict teacher, so his sudden change in behavior would be quite a shock. She might initially think it's some sort of trick or test.
Snape might initially be shocked. He's not one to show much emotion openly, but internally he could be very disturbed. He might start investigating what happened to Hermione immediately, using his skills in potions and magic to try and find a cure or at least understand the cause.
At first, Hermione would be heartbroken. She has shared so many experiences with the Weasleys. However, her strong will would soon take over. She would probably focus on proving her innocence if that was the cause of the betrayal. She might also try to find a way to reverse whatever situation led to the Weasleys' betrayal. If it was a matter of the Weasleys' own wrong beliefs, she would try to show them the truth, but if they refused to listen, she would distance herself from them while still remaining true to her own values and the greater good.