Trini and Kim’s parents love the other girl. Kimberly’s because they’re glad their daughter has new friends after her “incident” and Trini’s because they’re glad their daughter has friends at all.
But you know who isn’t all for the Trimberly relationship? Trini’s little brothers. Like…maybe they used to do stuff together on weekends like watch cartoons and make special breakfasts and go play at the park. Or she’d chill with them after school and watch them when her parents were busy. Or she’d sneak them treats after bedtime and before dinner. Just generally being the cool but exasperated older sister who is trying to make sure her brothers never feel alone like she did.
Well, now that she’s a ranger, things have changed. She’s gone more now. And yeah, they’ve noticed she smiles more but they’re kids. They miss how it used to be and just see their big sister slipping away. Trini probably doesn’t even realize how important those moments with her brothers were to them. The feeling is mutual, of course, she just didn’t know that they valued that time as much as she did.
Anyway, since she can’t tell them the real reason she’s been different lately, they sort of pinpoint Kimberly as the problem because she’s the one they see her with the most. They’re not mean to her, but they are standoffish and aloof. Kimberly figures it out pretty fast. The boys are fascinated with Zach and Jason and Billy and just Do Not fuck with Kim and almost seem scared of her sometimes.
Trini would never admit it, but she talks highly of her little brothers and Kim knows their time together is just as important to her girlfriend as their couple time and she’s been missing them too. So. Kimberly tells her it’s okay. To go hang out with her little brothers. She knows she misses them. Trini does and they’re thrilled. Since Kim knows what’s up she just…leaves Trini alone for the weekend and chills with the other rangers. Like, not going MIA or anything, but just telling her to enjoy her weekend and don’t worry about entertaining her. She’ll sneak in Sunday night and can tell her all about it. She also bans the others from bothering her with their shenanigans.
Cut to the next weekend and her brothers are ready for a repeat. But Kimberly is there. Trini’s noticed the tension but has just? Kinda hoped it would go away on its own. Anyway, Kimberly being the understanding gf that she is is about to leave and Trini is all pouty because hey, she planned this movie night for all of them and she kinda wanted to cuddle her girl tonight. Kimberly stays because that pout, who could resist? Not her. In the morning, Kimberly gets up super early and can’t go back to sleep. Trini’s out like a light and she doesn’t wanna wake her. The boys come barreling in and one, they’re a little awestruck that Kim is still there because “does our mom know you spent the night?” and two, they’re hungry and want their sister to make her special pancakes. Kimberly’s all like “we should let her sleep” and tells them she’s a great cook, she can get breakfast started and pls don’t tell your parents that I stayed over. Kimberly is not a great cook. In fact, she’s terrible. The boys quickly realize it and guide Kim through what Trini does but they really don’t pay that much attention and the food is horrible and disgusting. But they have flour fights and jam to some music and bond a little bit. They’re making progress.
Maybe next week Kimberly brings some movies that she thinks they’ll like. The week after that (and with Trini’s help) she makes some traditional desserts and treats for them. After that she brings some stuff that her mom made for them to try. (Idk I just love the idea of them giving each other culture lessons.)
They discuss the Power Rangers. Kim “makes up” all kinds of awesome stories for them and they love it. Trini does too. She’s so used to being alone, and here’s Kimberly, actively trying to engage herself in her life.
Eventually, they just…like Kim and get used to her and her sister being a thing and having to share her until they’re not really sharing her anymore and Kim is just a permanent fixture in their, and their sister’s, life.