Calling a prime to deal with a wandering monster is appropriate enough. She killed a bear that was menacing people, once.
The snake thing is just faster than she expects and before she's resolved to kill it it's on her.
"Well, for instance, my twin brother still has a little bit of a hangup about thinking about sex around me, since I'm his sister."
"I can't read the king of Welce," she mentions. "There's a ritual all five primes can do to protect kings against our powers so the structure of politics isn't casually subject to threats. If I'm not there it's going to complicate the succession."
"It's not something we can do alone. It might work with a subset but I don't know."
"No? Well, primacy is five things but it's sort of also one thing - it's a thing that happens in Welce and nowhere else, for instance."
"Welce isn't particularly warlike? And primes do vary - I could make a heck of a dent in an army but I'm not sure my great-aunt could have. And that's if I were convinced to participate in a war of aggression."
"I'm not aware of a time at which we definitely didn't have any."
"Primes vary in power. The current batch are pretty strong but I think it's plausible that there's just never been a conquest-minded monarch and a strong batch of primes willing to support one at the same time."