This post is meant to serve as a starting point for potential interactions and is not all-inclusive! If you have any thoughts or want to suggest something that’s not on here, please feel free to bring it up!
Dynamics That I’d Like To Explore
Professional Friendships / Acquaintances - with other Champions, League Trainers, Frontier Brains, etc. (It’s worth nothing that she does her research so she’s usually up to date on who the League-affiliated trainers are in each region). It would be neat to figure out what the different regions can learn from each other. If our muses are both part of the Unova League, I’d love to explore their dynamic (which will be based on Rosa’s view of them before she became champion, and which can definitely change based on present interactions). Also, any muses that are in the show business, as she is a famous actress (and I don’t get to do enough with that). Maybe our muses are playing parts in the same movie or play? Or maybe your muse is into contests (of which Rosa knows next to NOTHING about) and they want to show Rosa the ropes?
Recognition - Rosa has plenty of star power in Unova due to her work with Pokéstar Studios and her status as Champion. Her movies are broadcast in other regions as well, so it’s entirely possible for a non-Unovan muse to recognize her just from seeing her on the silver screen. I’m open to her meeting both fans and critics alike.
Rivalries - with other trainers of equal caliber. The other muse doesn’t need to be a Champion-level trainer for this dynamic to exist. There are plenty of powerful trainers out there that just don’t bother with League challenges and Rosa would be excited to come across them.
Former Plasma ties - whether that be former grunts that have had a change of heart like her or grunts that stuck to it and followed Ghetsis to Neo Plasma, relationships of this nature can be either friendly or antagonistic. Additionally, she holds great respect for some former Plasma members (such as sage Rood, Anthea, Concordia, and N) and disdain for others (like Zinzolin), as well as fear of the Shadow Triad and Ghetsis himself.
Antagonistic - this goes hand in hand with the second half of the above, but it can obviously extend to other villain muses (though she would only know that villain muses outside of Unova are villains if it’s something that the mun agrees would have been all over the news at the point in time that interactions occur). Her views of Interpol are also swayed toward the negative, based on her past experiences with Agent Hale Foster and her mother being placed under house arrest briefly during the events of B2W2. Additionally, she has pissed off many a pokémon poacher in Unova due to her efforts to eradicate them from her region (which is actually important to an upcoming plot I have planned out for her).
Found family - her own blood family isn’t very big (reserved mostly to her mother and some family in Lentimas Town; her father is back in PokéSpain) so I love the idea of her coming to love her friends like family
Simple friendships - maybe both our muses are into some sort of common hobby or enjoy the same type of music / movies or maybe they just like to get together to gossip or enjoy dessert together, lots of slice of life stuff.
Romantic relationships are not completely off the table but they require an extra layer of development and comfort between Rosa and other muses (and good/regular communication between myself and other muns).
Places Where Rosa Can Be Found*
Anywhere around Unova - she doesn’t spend all her time in the League. She constantly bounces between the preservations she established (White Forest and Icirrus), the Bring Us Together Foundation she established to help return Plasma-stolen pokémon to their previous owners (Driftveil), and Pokéstar Studios (Virbank). Her primary (but not public-known) residence is in Village Bridge and her secondary (but officially known) residence is in Nimbasa. Sometimes she goes as far as the Trainer’s School (Aspertia) to talk to younger would-be trainers and tends to take some of Cheren’s classes to capture their first pokémon in Floccessy.
Hoenn - she has to travel to Hoenn occasionally for the hot springs to ease the lingering pain from Kyurem’s unmelting ice-induced wounds. She loves to explore the Hoenn wilderness, though… and Meteor Falls is one of her favorite places ever.
Kalos - she spent some time training in Kalos prior to challenging the Unova E4 and Iris. She also occasionally travels for film-related business or gets dragged along to Lumiose by Blue ( @evoblue ) on shopping trips.
Galar - after a few years of championship (and an unwanted encounter with an obsessed fan that COULD have been bad), she takes a sabbatical and decides to disappear from the grid. She travels to Galar to train and explore the area, and also to spectate on the gym challenge.
*While Rosa has never officially been to Kanto, Johto, Sinnoh, or Alola, she is open to visiting any of these regions. Johto in particular calls her interest due to the rich history and lore behind all the legendaries (as history and mythology were part of her studies while growing up).
Timelines
For the most part, Rosa’s threads will happen in the post B2W2 timeline / during her time as Champion. If you have a Unovan muse and are interested in writing something taking place during the plot of B2W2, I am open to discussion!