In highschool, Girls tend to have silicone or plastic/enamel bracelets, not metallic ones, for 2 specific considerations: Durability and Cost. while that style of bracelet is forced over a duckbilled fist, its liable to fracture from incidental force applied to it. Im not approaching the cost analysis because that requires information we dont have, but the current bias on analysis of that panel is Adult, not Teen, but essentially if a bracelet fractures, its probably going to be lost, hence the material choice. Once youre not surrounded by consistent hordes of people rushing from location to location, jewelry becomes much more generally expressive rather then a splash of color like the silicone bracelets are.
The baby is not Estelle. She has Serina's Eyes and Eyelashes and the Kirk Summation is discussing a hypothetical Baby Serina. Estelle is explicitly a red herring on detailed analysis of the artwork. Eyes were VERY consistent that chapter for everyone.
While i havent specifically called out panels, the entire initial point you made i have pointed to the chapters in the assembly order necessary to understand your initial argument is fundamentally invalid, weve seen in explicit detail the potential of that spell being built towards. you then relied on hyperbole, exaggeration, and explicit bullshitting to argue your point. You seem to not understand the point of a Soft Magic System in composition, where Magic is left relatively simple and overarching in explanation so that as needed it can be adapted to the narrative's needs. In fact, solutions like the Kiaoken are purely a solution to problems within a strictly hard magic system like Dragonball's Ki.
You also need to learn the difference between Character information and Our Information. We know Serina is a Magical God by skill, Almelia is starting to realize that Serina is a magical god by skill. Everyone else is completely out of the loop. one thing you have to learn is that unless a character is explicitly granted the capability of being a reliable Narrator, everyone is an unreliable narrator describing their own internally consistent worldview. Serina to them is constantly making weird claims or doing weird things they dont comprehend. This is why i explicitly call out Serina being Almelia's maid, because while she is employed as a maid, she is not, in fact, a Maid first and foremost in their relationship. Serina either isnt thinking about the distinction, or doesnt care. Almelia is more concerned about having little Serinas then the ethicality of having babies with a woman she owns as a piece of property and not through mutual affection. The same goes for her magic. Other characters can express their opinions, but our understanding of Serina is she can do anything with magic as long as it is something that requires fine control of the arcane, but she has very little raw power and can be overwhelmed by other practitioners, either directly or indirectly.
If i come off as condescending, its because youre ignoring my fundamental point. Argue from a position of information and literary theory, not from hyperbole and baseless claim. Its why i specifically assaulted your argument with at least chapter references to demonstrate how you are wrong in making the claim that you did. Asspull and Deus Ex are Tropes that explicitly can be deconstructed