For what is worth, I doubt either of those things happened.
This would require her to have extremely good ki sense given the amount of energy involved and that doesn't seem like her area of expertise.
On the other hand, the ki in question is that of her own son, which she might be predisposed to recognize. And we don't actually know how good Dandeer's ki sense is. Remember that she
somehow realized we were at her house talking to Valentine about training Jaron and came running. Either she sensed our ki from a goodly distance away, or she had magical alarms rigged to tell us about such things, or
something.
Dandeer is old and experienced compared to us; it is
not safe or wise for us to make a lot of assumptions about what she can and cannot perceive. She's obviously not omniscient, but we shouldn't assume we're safe just because she (or her magic) are "blind" to our actions.
Putting aside that it says his ki goes unnoticed amid the symphony, the hole was a flawless temporary work.
"Flawless" means it did exactly what it was supposed to. Jaffur, whose knowledge of sorcery is all the result of secondhand information and experimentation under unfavorable circumstances, may not have known all the possible consequences of his action. Jaffur's ki may have gone unnoticed by some but not others, or may have gone unnoticed while the energy was being released but been noticed at some point of time during the
hour or so that we were using the Spirit Bomb power boost to fight and subdue Dazarel.
Is this a thing that absolutely certainly happened? No, clearly not.
Is it a thing that couldn't have happened? No, it could reasonably have happened.
I also doubt there was an alarm in place because of several reasons. For one, this is not the first time Jaffur punches a hole through it, if there was an alarm then Dandeer would have noticed whenever Jaffur took over Jaron to talk to us or to let his power out
The alarm might be sensitive to very large breaches (like Jaffur roaring 'out' of the seal with his full power) but not small ones (like Jaffur letting a few hundred thousand units of power through, or taking momentary control). Or the spells Jaffur used from inside the seal to provide Jaron with power or ASSUME CONTROL may have been the result of months of careful effort on his part to find a way to bypass alarms and wards that were in place, and he may have tripped an alarm this time because he had no time to do anything about it.
I'm not saying this
MUST be what happened. I'm saying it could, I'm saying it's at least a believable and plausible danger that we might want to guard against, as opposed to being a laughable and ridiculous notion that we should entirely ignore.
Can you at least grant me that much?
For the second, sorcery works by concepts made real in their relation to sealing and such an alarm doesn't sound that easy to conceptualize in that context.
Very simple sorcery works in simple ways.
Advanced sorcery, such as only a handful of magicians can accomplish, may be capable of rather more things, or be adapted to do different things. Let's not assume that just because we heard
one explanation of how Exile magic works, a hurried one given under battlefield conditions, that suddenly we know everything.
Edit: I also doubt giving ground rules to Dazzarel is that urgent. There are four royals here, they are not going to leave him unguarded while we do other things.
I don't think you understand why I call this important/urgent. The danger isn't that Dazarel will do something damaging
right now. The danger is that if Dazarel has time to grow accustomed to the idea that he can interfere with us freely and without consequence, as he did with Maya... We are going to have to exert far more effort later to convince him otherwise. I'm bringing this up specifically because of my experience dealing with unruly little shits; you
really want to start that process of establishing discipline and ground rules as early as possible. Because the amount of effort required grows exponentially as a function of the time invested. People are much more amenable to discipline
immedately after their situation changes than after they've had time to grow accustomed to being free of any disciplinary constraints in their new situation.