I think Trixie and Katya might approach reading fanfiction with a sense of curiosity. They may enjoy seeing the different ways fans expand on their world. It could be a form of flattery too, knowing that their fans are so engaged that they create their own stories. Maybe they'll even find some fanfiction that makes them laugh out loud or think deeply about their own characters. They could also potentially share some of the more interesting fanfictions they find with each other, discussing the ideas and creativity behind them.
Well, redemption can be a theme. If Trixie has made mistakes in the past, her romantic relationship might be a path for her to redeem herself. Also, acceptance is a big theme. Accepting herself as she is and being accepted by her love interest. And of course, the theme of magic is always there, as it is an integral part of the My Little Pony world and can influence the romantic plot in various ways.
I'm not sure if it's popular. There are countless MLP fanfics out there, and popularity can vary greatly. Some fanfics gain a large following due to their unique concepts or well - written stories, but without more information or research into the specific 'trixie's slaughterhouse mlp fanfic', it's hard to determine its popularity.
I'm not entirely sure as I haven't read it specifically. But generally, an MLP (My Little Pony) fanfic might be about the adventures or new situations involving the characters from the My Little Pony universe. Since 'Trixie' is a character in MLP, this fanfic could potentially focus on her in a setting like a slaughterhouse, perhaps in a very dark or alternative take on the MLP world.
I don't have the precise release date of Jinx as a manhwa at hand. You might want to check reliable manga or manhwa databases for accurate information.