Terra's mining adventure

So we know that right at the start, Terra is rescued from the Slave Crown by Arvis and escapes into the Narshe mines. Here, she's cornered by guards and a section of cave gives way, dropping her to the floor below. Here, she waits unconscious until Locke saves the day. Then they run off to Figaro and it's all a case of trying to get Terra to help the Returners.

What if that section of cave didn't give way? Terra would likely have been captured. Would Locke have made it in time, or would he have had to fight off the guards and rescue her? Would he sneak into Figaro and ask Edgar for help? WOULD HE DO NOTHING?

It's just very convenient that a natural "disaster" for want of a better word is the only reason things could progress as they did.

Locke would have picked the lock to get to where they decided to hold Terra. That or Edgar would roll on by and and explain the situation to the Narshe folks. If they refused to listen, him and Locke would go on a stealth mission to rescue Terra. After all, Edgar's castle is technically a Metal Gear, so that would make sense.

Metal Gear Sandy. Edgar uses a female Metal Gear because he's a ladies' man.

I doubt Edgar would do anything. He's got open political ties to the Empire and him stepping foot in Narshe would have caused an international incident. He's only able to get in later cause A) He sneaks in through the minds, and B) Arvis along with Kefka trying to torch Figaro Castle makes it obvious that Figaro is not an ally of the Empire.

Locke would have had to sneak into Narshe to save her, or you know, Terra could have just torched the guards. She's not exactly a push over you know. :p

Mog and the rest of the moogles would have attacked the guards, and then Terra would escape with Mog and the game would continue from there and Locke would come into the game at Figaro since he already knew Edgar.

Im sure Locke wouldve made it in time, as they were taking her out of the cave since he was able to reach the hole before they were able to go down the stairs to the cave. He wouldve ran into them on the way out and they wouldnt have time to call for backup.