Ghouls fed off the dead, because they were not particularly intelligent, creative, or aggressive. While they could emulate human behaviour and speech, it served at best as camouflage. Anyone paying attention would realise there was something off about the unusually tall and gangly creatures wearing human skin to conceal their exaggerated features. People choose to ignore the weird.
So, ghouls were old game for her, or that was true till this moment. Ghouls often tunnelled in from one grave to the next. They were basically oversized gophers with a taste for decaying flesh. Given their size, these tunnels were often small and cramped, to avoid tunnel collapse and discovery.
Disclaimer: This excerpt from The Van Helsing Impetus is currently in development. There may be typos, errors, omissions, inconsistencies and so forth. The image is sourced from Pixabay.