There’s only three things that happen in the book:

Sal meets someone who talks too much and is very keen to let Sal know she is disliked.
Sal spends lots of time running around while the enemy shoots magic bolts like a video game character boss.
Sal fires gun. Gun goes boom.
Sal sulks about all the bad things happening to her and what an unlovable person she is.

It’s not bad, but the world building is a thin tissue paper around the fight scenes. It’s sort of like Ready Player Go if you took out the pop culture references and added in a bunch of self loathing.