The next major event is at Myne's baptism.
Due to the Glico man pose and the dogeza the priests do, Myne collapsed from holding back her laugh.
(the significance is actually trying to reach as close to the sky and earth as you can)
Because of her 'fancy' clothing/hair ornaments, she's mistaken for a rich girl and taken to appropriate reception room.
Well, she woke up and want to go to toilet, but there's only a pot in the room and she's like NOPE.
So she wanders out, until she finds A ROOM FILLED WITH BOOKS
Try to get in, get blocked by magical wall.
Cry
Then finally some nun found her and when she asked how can she get in, the nun said only authorized people of the temple can get in.
which Myne immediately say she'll enter the temple.
Well, some shenanigans happen and basically:
The priests heard she's got a rather strong case of consuming (i.e. high mana) and have her try pouring magic into a relic. Enough stones got charged that they want her to enter the temple.
Myne felt a little better to let off some of the fever (btw, even though the amount of stones she lit impressed them, she actually held back in fear of accidentally breaking the relic like what she did to Frieda's tool)
Myne's casual suggestion she can donate a large gold coin also helped.
Anyway, she goes home, tell her family she want to enter the temple, at which point they flips out.
See, only orphans go to the temple, so her saying that is equal to saying "I don't want to be part of this family anymore"
She quickly solved that misunderstandings and said she'll try to negotiate with the temple to maybe let her commute to work.
Her parents go with her next time.
Upon realizing that Myne isn't actually daughter of a rich family, the temple head's attitude turned condescending immediately, event threatening the parents to let her enter the temple.
Well, this is when Myne show us the most basic use of magic: Just unleashing it out.
The pressure created from this was physically damaging enough that the head priest (the 'nice' one) cough up blood when he had to block her from causing any further damage.
Anyway, temple head fainted so head priest took over the negotiation and promised to compromise as much as they can.
So he asked for the conditions from Myne's side (later on the parents noted he's a nice person for compromising this much)
1. Do not treat Myne like the grey robed - Given that she's going to be doing the work of a blue robed (noble), she will be given a blue robe. (if the temple head got his way she'd be wearing grey btw)
2. Let her commute to work - some of the blue robed do that so this is fine.
3. She can only work when her conditions allowed - accepted.
So yeah, basically every conditions presented were accepted
arc 1 ends with her return home from the negotiation and have a " welcome back" moment with Tuli.