Disclaimer: JK Rowling is the author of Harry Potter, I own none of it.
Hermione was excited when she received her Hogwarts admission letter. The ink and paper offered her magic, a new life, and most importantly, the chance to start over. When September 1st came however, her dreams were dashed. Apparently, muggle or not, no one really appreciates a "know-it-all".
That's okay, Hermione thought, being able to use magic is already incredible. As for her classmates' comments, she did not mind, maybe.
After the troll incident, Harry, Ron, and Hermione became the Golden Trio (or a duo plus one). Most teachers loved the Golden Trio, and they were always greeted with a smile, a nod, or a cordial "good morning". But somehow, unless it was in class and she was (again) the only one who knew the answer to a question, their gaze would always slide over Hermione. The boys are simply louder, and require more attention, Hermione thought. She did not mind, maybe.
Second year was more of the same, as was third year. Exhausted, Hermione sat alone in the vast library, sifting through material for Buckbeak's trial. Harry and Ron are busy with Quidditch, Hermione thought, they're working hard to make sure Gryffindor wins this year (but isn't a creature's life more important?). She did not mind, maybe.
Being asked to the Yule Ball by a TriWizard Champion, the Viktor Krum no less, was more than Hermione had ever imagined. When Ron accused her of fraternizing with the enemy (isn't the whole purpose of the tournament to build inter-school relations?), Hermione tried to explain, but her words fell on deaf ears. Then, Molly's Easter present arrived, and Hermione wished she was given nothing at all. It's all Rita Skeeter's fault, Hermione told herself, they can't help it (but why did they trust her so little?).
When Umbridge came to the school, the Golden Trio knew it was going to be bad. Don't do it, Hermione tried to tell Harry as he spoke. It's good to push the limits, but countering Ministry propaganda in front of a Ministry-appointed official is well above the limits. Once she learned of Umbridge's punishment, Hermione rushed to find Murtlap Essence to alleviate his pain. Of course, she would, Harry was her friend.
Sixth year came down fast upon them, and Harry's legilimency lessons began. — They ended just as quickly. It's imperative for Harry to block his mind from Voldemort, Hermione knew, but Harry repeatedly brushed off questions asking if he was practising.
In their seventh year, Ron left the Horcrux hunt. That night, and many nights after, Harry heard Hermione's tears, muffled but still loud in the silence of the tent. He hesitated, took a deep breath, hesitated again. He did not get up to comfort her. That was alright, she didn't expect him to. Besides, she did not mind, maybe.
The war was won, Voldemort was killed, and the world set about rebuilding. Harry, Ron, and Hermione re-formed their little trio, or duo plus one (it worked both ways). Hermione did not mind, not.
Seven years had gone by, and enough was, well, enough. What they had would never last, and maybe that's okay. She conscientiously withdrew, and after a series of politely-refused invitations to one engagement or the other, the invitations stopped coming. The famed trio faded away so subtly no one really noticed until one day, it was no more. Hermione did not mind, really.
Time passed, and life went on. Sometimes, the duo would catch sight of Hermione and give her a polite smile, receiving one in return. It wasn't awkward, maybe.