Haha, no worries~ I love worldbuilding, so if anything I'm glad to talk about it.
For the higher tech - the setting varies WILDLY on tech levels. The MC comes from somewhere that is pretty low level (though they do have a functional grandfather clock - so 1700-1800s), but Badon is one of the biggest trade cities in the world and has access to much more stuff.
There's a bit of Avatar: Korra where the proliferation of low-level magic has made some forms of production and lifestyle much easier, for example healing magic makes the average life expectancy much longer than it was in the middle ages IRL and earth/water magic can make farming pretty reliable.
On the opposite end of the scale, Mage-Colleges can be full on floating cities, and mages combine science and magic to push the boundary on things that wouldn't even be possible in our modern 2022 world. Some of that trickles down, much of it doesn't. Across the setting, a lot of places are still somewhere in the 1700-1800s range, sometimes even tribal (ex. the beast tribes), but rudimentary guns (Firewands) are somewhat used by desert mages.
It's intentionally not *just* generic 1700s stuff, but obviously I had to pick a rough timeframe for the default.
Aspasia has a lot of control over the exact material she's made of, so she might be able to turn into mercury, though that would probably be a bad idea during a slime bath LOL
And nice, glad you liked the Celica stuff! Good play on words too. I really like Celica, she's a lot of fun to write.