I'd imagine that the hunters would at least be so competent as give their trainees a "to actually kill a vampire you need to do X" five minute lecture. ^^
No, they'd only tell them where the weak spots are, what makes them a weak spot, and what equipment is most effective.
There really is not excuse for her to not be using those talismans since the first chapter, but that Miyoko's smile is super cute.
Whoa. She actually beat her... I'm impressed, but... That's right... Why didn't she use that talisman before? It seems it could be an easy earlier win for the huntress.
Effective weapon needs to be a surprise attack...it's actually just luck that she was able catch her off guard here.