It occurred to me that I've never sat down and drawn out just TAPP!Maki without context of a comic before, so here's a better reference for her outfit (plus a more canon-adjacent one). I'm not exactly a character designer, but I wanted to give her clothes to reflect how she's changing in this AU; she first tries to give off more friendly, approachable vibes as 'Ultimate Child-Caregiver', but, failing that, finds she still wants to come across as more sociable and less distant with a little lighter overall palette.
Most notably she cut her hair as part of a "new beginning" at the school. She hates being an assassin, but also wants to put her new skills to use as an 'Ultimate Bodyguard' (or something to that effect) when her first attempted major switch doesn't work out. The boots offer a bit of shin protection and are less likely to turn an ankle when running. There's also an element of reclaiming her own childhood that comes through in the extra hairclips, earrings, and bigger emphasis on her bow. They're impractical, but she's still a teenager; not everything needs to be practical, yet. They still have some time left to be kids.