Nyomi approaches the goblin also, making a big play of sheathing, both rapier and kukri again. She doesn't speak, but instead, takes a few steps past the Goblin, and other members of the party, then quieting her mind, she studies her surroundings for anything helpful.

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Here goes some rolling:

To see if there's anything unusual about the cave:
Search::1d20+2=(3)+2=5
Spot::1d20+4=(12)+4=16
Listen::1d20+8=(12)+8=20

Then apply any knowledge I have to the cave:
Knowledge (Local)::1d20+6=(12)+6=18
Knowledge (Nature)::1d20+6=(8)+6=14

Then to listen in to the conversation with the goblin:
Listen::1d20+8=(18)+8=26 (probably don't need this one, but just in case)
Sense Motive::1d20+8=(11)+8=19