Anima's human form, the mother of Seymour Guado, is only shown in two scenes of FFX, so she does lack in dialogue. Though, you can still tell a lot from the small speech she gives about why Seymour is corrupt and why she is a fayth.

Yuna > "You are maester Seymour's mother."

Anima > "So you know this yet still you seek my aid. My son, do you not hate him? It is alright. He is the one who sowed the seeds of hatred, he is to blame. But I am at fault for letting him become what he was. He was always alone, half Guado, half Man. I wanted to give him the strength to live by himself, and so I became a fayth, but, because I let him taste power, he began to thirst for more. He was not satisfied with my aeon. He wanted more, more power. "

Tidus > "And he found Sin"

Anima > "Yes…Come, summoner. I will besot you with my power; the dark aeon, Anima. Destroy Sin and my son's obsession with it…though it is small recompense for what I did to him."

From just this 'speech' alone, we can notice a few things about Anima. Her speech is very proper, and her upper status of being married to a maester goes with it. She uses a lot of metaphors, which could imply that she was educated.