In terms of updating about Eldrida... unfortunately the romance novel seems to itself be set in a fanciful alternate universe, possibly? Or at least, there's a mention in there about how the character has something called Love Spirit which is more powerful than sorcery, and they're in some sort of giant underground cavern setting with no mention of planets existing.
It will nonetheless be possible to pick up that "wizardry" is the use of (potentially small) amounts of sorcerous power in mathematically structured ways--the author seems to think that this is a crutch for people who lack raw power--and also that Orphan was using crazy amounts of power in an unnervingly brute-forced way. There's a brief magical fight which casually refers to a lot of concepts that neither Opalyn nor Orphan had, but you can maybe see in retrospect from Orphan's memories that Orphan's opponents were trying to come at her with efficient spatial-slicing spells, and that Orphan was simply blowing away everything in her path using much larger amounts of power. There is not anything in here about people throwing around fire. Mighty sorcerers are praised as being precise and efficient and leveraged and pinpoint and various other qualities that Orphan did not seem to particularly notice were important.