Also another thing that i have noticed is this and it just hit me again
Why is that when terra is transformed into an esper and screams off to zozo, after you come back from vector she talks about her father, Madiun, who concidentially enough you have Madiun as an esper and this is supposed to be her father. i wish either a.) someone can explain why a storyline never amounted from this.
Your order is not quite right.
Terra files to Zozo after reacting with the esper.. so everyone goes chasing after her. You find Ramuh who explains to you Terra's condition.. explaining "there is an esper in the Magitek Facility that can help her".... once you escape the Magitek Facility, you go directly to Zozo anyways, and thus the story. The whole point to get Maduin is make her understand the Esper side of Terra. It just happens the esper who helps Terra is her father.
Anyways, it doesn''t seem like you paid enough attention to the script...
Besides, there's no real mystery to Terra afterwards, hence Celes gets the WOR all to herself anyways.