"Mowtom, if I might suggest that Bubble say something like:
'Scary Ranger's gone for now, don't worry. I'm looking for a guy, the Wanderer, who might have come by here recently. Have you seen someone like him? What's down those tunnels, and did you see a human go down any of them?'
Then we wait for a reply. If the Clefairy don't tell Bubble a sufficient amount of information about the tunnels, we implement stage two. The three of us (you, me, Cheeky) go back into the mountain, and we walk at a normal/loud volume and Cheeky uses Brighten. Bubble then says:
'The scary Ranger is coming back! Look, sisters, I can protect you if he comes back; if you tell me what's down each of those tunnels there, I'll use my psychic powers to send him down the most dangerous one and he'll never come back. But you must tell me what's down each of those tunnels, now!'"
"Are you sure that's a good idea, Stary? Going down the most dangerous tunnel alone?"
"I'm a Dark-type, Cheeky. Psychic won't affect me."
*Shudders at the thought of Psychic* "Well, all right, then. But don't they know that, too? Also, what do we do if the threat of you coming back makes them seize up again?"
"They freaked out the moment they saw me; they didn't look at me twice. I strongly doubt they figured out my typing. If the threat of my return terrifies them, we are capitalizing on it this time and conducting a proper interrogation. We are getting answers soon, one way or another."
Re-enter mountain but only walk down the original tunnel for around four minutes, being careful to take the same size strides as before - hang tight
"Enhanced interrogation constitutes torture and I'll have no part of it. If it comes to that, that is."
Follow Stary - Hang tight
Both:
IF Clefairy do not give details about the tunnels when Bubble asks THEN approach Clefairy den in a conspicuous fashion