I believe for Terra, IxFP, probably ISFP 4w5. She shows a lot of fi, I don't entirely rule out ne for her but she seems pretty in the moment so se makes sense. Terra wants to do the right thing but she primarily acts on her emotions.
She keeps a lot inside so I would make sense for her but being that she has a friendly nature prior to her turn even though she has a lot of baggage, she's an ambivert of sorts and a risktaker. Well-meaning, fun-loving, but she can be very defensive and reactive. Then, her fi takes a turn for the worse and goes to the dark side. It doesn't make her a bad person but fi first, a world of hurt, and potent earthbending powers make for a dangerous combination. 6w7 in her tritype would make sense too. I want to say ISFP 4w5 6w7 9w1 sp/sx for her. An so blindspot makes sense too, while she wants to serve the team to the best of her ability, being in a group doesn't seem like the most natural thing in the world for her.