So, there seems to be two different things that Shani is doing in her action.  She is trying to (1) deceive the goblins and (2) convince the goblins to flee.  So...<br/><br/><div class="quoteheader"><div class="topslice_quote">Quote</div></div><blockquote class="bbc_standard_quote"><strong>Deceive or Lie</strong><br/>If you use Bluff to fool someone, with a successful check you convince your opponent that what you are saying is true. Bluff checks are modified depending upon the believability of the lie. The following modifiers are applied to the roll of the creature attempting to tell the lie. Note that some lies are so improbable that it is impossible to convince anyone that they are true (subject to GM discretion).<br/><br/>Retry? If you fail to deceive someone, any further checks made to deceive them are made at a –10 penalty and may be impossible (GM discretion).</blockquote><div class="quotefooter"><div class="botslice_quote"></div></div><br/>Based on the rule, it seems that Shani will be able to convince the goblins that there is a large force coming up the west entrance.<br/><br/><div class="quoteheader"><div class="topslice_quote">Quote</div></div><blockquote class="bbc_standard_quote"><strong>Suggest Course of Action</strong><br/>You can use Bluff and Diplomacy together to make a request of a creature, without it even realizing you have made the request.<br/><br/>Check: You can gradually coax a target into thinking a suggestion is entirely its own idea, making the creature more likely to act on the idea than if you had suggested it outright. You discuss topics subtly relevant to the request, asking leading questions and narrowing the scope of the conversation so that the target eventually decides to take a specific action you have led it to.<br/><br/>You first attempt a Bluff check to convince the target that your request was actually its idea. This is always treated as far-fetched circumstances, resulting in a –10 penalty on the check. If successful, you then attempt a Diplomacy check to make the request of the creature, treating its attitude toward you as indifferent for this single request (regardless of its actual attitude).<br/><br/>Action: Planting the notion and then coaxing a target into suggesting the notion himself each require at least 1 minute of continuous interaction. This can be difficult to arrange with a hostile or unfriendly creature.<br/></blockquote><div class="quotefooter"><div class="botslice_quote"></div></div><br/>All right.  For this analysis, this is the closest rule I could find.  Because the goblins would be hostile and the action requires at least one minute of continuous interaction, the bluff to convince the goblins to flee will be unsuccessful.