Heh, funny you mention a party of 4 when I always imagined 4 heroes, a party of 4, in this kingdom she is into.

The papers are spellbooks and magic research papers, I imagine Lokina as a very powerful mage but is treated as an outcast by the Mage's Guild, which is one building/city/academy in the background.

She was also the princess of the kingdom of Asgalia, whose castle is further in the background, before it fell apart due to a revolution, though, she never was involved into royal family stuff, she was the kind to leave the house and never return.

To study magic with every mage, being talented and record magic of them all, submit the notion of spellbook technology, where anyone could use magic recorded in a spellbook (like using GenAI, like she is stealing others' magic spells).

Her greatest feat was record the magic of every living mage within a spellbook. Every mage treated her like an outcast ever since because of that, she is not allowed to interact with any mage, and this remains true 5 centuries later.

I can give more details, if needed, but feels like already too long of a comment~