[ The symbol that Alucard draws out for them is better but it doesn't provide her anymore insight or familiarity. Not that Hilda expected to have any new revelations considering her skillset; at the very least she can try and commit it to memory in case it crops up elsewhere.

A little furrow appears between her brows at Petra's suggestion. ]

Maybe they took some of them this way? Like it's a marker or sign for a hidden passage somewhere? There were only two paths though so it seems a little silly to have to mark it. So what are they trying to communicate?