1: You haven’t given the lead character a goal. This is causing problems in your logine. (Unless the Sunday school teacher is the lead character who has the goal of stopping the girl)

2: Because you say she is home schooled you don’t need to tell us she is ‘young’ You should give us a better adjective that tells us more about her personality: a feisty home schooled girl; a determined home schooled girl: a repressed home schooled girl… as an example.

3: Because your character doesn’t have a goal, we don’t know what the Sunday school teacher is trying to stop.

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“After she discovers a recipe to summon a demon, an introverted home school-er plots to destroy the bullies who’ve tormented her, but must evade an rabid Sunday school teach who believes you must not suffer a witch to live.”
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Hope that example helps, yours will be different of course but by adding a goal, “Destroy her bullies” we now understand why a home schooled girl would want to summon a demon.

Good luck!