Aside: what's with MC's reaction to the pendant she's wearing?
Looks like something he recognises from the original game, and which was considered a Trash Item.
Might well not be here, given that there's quite a few things in the story so far that weren't useful to
players, either due to Plot/background or mechanics, but may well have significance to "npc's".
One such thing is the "strong" sword art that was only available to NPC's, specifically enemies, but for which our MC "may" have talent for, as mentioned/hinted at several times in earlier chapters.
(not taking any bets on that one... that one's telegraphed so hard it's a No Shit, Sherlock...pretty obvious who'll eventually teach him as well..)