Adria's eyes go wide at the sight of the monstrosity. Zarrachia has the right idea- fleeing is smart here. Adria scoops up Peridora and starts carrying her- longer legs matter at this point- and darts ahead, possibly even leaving her two shorter companions behind.

Spoiler: OOC
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Making a Geb Lore roll in case these things exist there:

Geb Lore- (1d20+4)[5]