She’s definitely a contender for being the best teammate in P4, it’s between her and Yukiko. Both of them can pump out isnane amounts of damage, then Yukiko can heal people, and Naoto can use light and dark insta kills, heat riser (if you do her social link) and almighty damage. She also learns mind charge through her social link, but if you do on bike rides with Yukiko 5 times she also learns mind charge. But the moral of the story is that both Naoto and Yukiko are must haves if your looking to run a really strong team. Then as your last, it should probably be someone who does physical damage, so I’d say Kanji or Chie (you get a signature attack with either of those two also. Since you already have Naoto and Yukiko.) in my opinion, id say Kanji would be better, Chie is good, but Kanji can do pretty good electric damage. And learns primal force (hardest hitting single physical attack in the game) and can get power charge through his social link. Plus if you have him LV 99 with a godly robe ( the armor item you get for beating the reaper, gives you +10 stats in all categories) Kanji has a maxed out strength stat. So he’s almost always hitting 1000+ damage ofter power charging, plus if it’s a boss fight, you can have Naoto spam heat risers on your whole team. It’s a strong setup.