She could be determined. If she has feelings for Troy, she won't be easily deterred. For example, if there are other girls vying for Troy's attention, she'll find ways to stand out, whether it's through her unique talents or her kind heart.
She might be creative. Maybe she writes poetry or stories in her free time, and often uses Troy as her inspiration. This creativity could also make her a bit of an outcast among some of the more mainstream students, but Troy sees it as something special.
She could be very observant. Since she has an interest in Troy, she might notice all the little things about him, like the way he runs his fingers through his hair when he's thinking. And she's likely to be a bit shy, especially when it comes to approaching Troy directly.
One possible plot could be that Gabriella's sister has always admired Troy from afar. Maybe she's an artist and she starts to draw pictures of Troy secretly. Then, one day, she accidentally drops her sketchbook and Troy finds it. He's flattered and they start to have conversations about art and music, which gradually develops into a friendship.
Well, their married life could be full of musical moments. They might write songs together and perform at local events. Maybe they'd start a small music school in their neighborhood to pass on their love for music to the kids there.
They might live in a big city. A place like New York or Los Angeles would be ideal for their careers. There are so many opportunities for both music and theater in those cities.
You can try fanfiction websites like Archive of Our Own. There are usually a lot of stories about different characters, and it's likely you'll find some great 'Troy Bolton and Gabriella Montez' fanfictions there.
One great 'Troy Bolton and Gabriella Montez lemon fanfiction' I read was about them going on a secret adventure during summer break. It had really detailed descriptions of their newfound closeness and how they overcame some small challenges together. It was quite heartwarming.
Their relationship would become more serious. There would be a new level of commitment as they are about to become parents.
In fanfiction about their kiss, the setting often plays an important role. It could be in a school hallway, which adds a touch of youthful spontaneity, or perhaps in a more romantic location like a garden, which heightens the emotional intensity of the kiss.
Lemon could be brave like Harry. Since they are twins, she might inherit the same Gryffindor - like courage. She could be the type who doesn't shy away from standing up to bullies at Hogwarts, just like Harry does with Draco Malfoy.
Gabriella might cope by throwing herself into her studies or work. By focusing on something productive, she can take her mind off the situation at least for a while. For example, if she's in school, she could strive to get excellent grades and prepare for a good career to support herself and the baby if she decides to keep it.
Another theme is redemption. After Troy hurts Gabriella, there's often a journey of him trying to make it up to her. He realizes his mistake and tries to win her back. It's like in 'Forgotten Promises' where Troy has to really work hard to regain Gabriella's trust.