OOC:
Okay, so what happens these next few rounds, and the exact sequence that they happen, are probably the difference between all of the the party surviving this, some of the party surviving this, or a TPK for probably all but Eltrezar. Gilly's actions are especially critical right now.
I'm not trying to railroad anyone or roleplay your characters, but I also want to make sure you have all the information available to make informed decisions and choices, and I understand that maybe the big picture isn't clear. So let me just take a second to give out a few more details that Gilly would probably know, that maybe I haven't made completely clear to the players, and I'll just go ahead and let you peek a bit behind the DM screen a minute, because I think that it's reasonable that Gilly would be aware of some stuff despite being blind right now that may be lost in the PbP format:
•Gilly would know that Bors has gone down directly in front of her, and I think she would be able to assume reasonably that the ghoul that felled him is adjacent to Bors on the other side of him, thus being about 10' away.
•Gilly also heard a ghoul run after Kobort and attack the hireling a few seconds ago, the sounds of which did not originate from directly behind Bors.
•I think Gilly could deduce that if she crept forward in the dark,
right now, she would bump into the ghoul that dropped Bors after 10' of Movement, which I think would most definitely give her away (and you can't pass through a square occupied by an enemy). I mean, assuming she
is in fact invisible to the ghouls right now, she basically looks like the rest of the ghoul's surroundings (probably a wall, or a piece of rubble or stone), but if a rock suddenly bumps into your shins, you would look down, and even a stupid ghoul would think, "Hey, rocks don't move by themselves..."
•So I think Gilly would be able to assess that right now moving forward is going to cause her to run directly into the ghoul, and that would be really bad. She would be better off holding her Turn until she hears the ghoul clear out.
•I also think that Gilly would know that these ghouls seem to have a method to their madness. Every time a ghoul has felled a member of the party (and Gilly's seen quite a bit of it this encounter, including to herself) the ghouls immediately move on to targets that are still standing and fighting. It's easy to deduce that these ghouls will eventually start eating the party, but they don't start eating until any and all threats are eliminated.
Probably they'll eat anything with meat on it, but the fact that they prefer to paralyze their prey is likely in part to be able to eat without concern of being attacked while feasting, and probably because they prefer living, warm meat, over dead meat (they'll eat anything, but if it still bleeds, what a extra special dish, y'know?).
•Seeing that at this moment the only other party member still alive and fighting is Kobort (again, assuming the ghoul doesn't see Gilly), through meta-knowledge the players can see that Ghoul #4 goes next, and the "Bors-Buster" will likely clear out and go after Kobort, leaving the hall open for Gilly to creep through without obstruction.
So, if Gilly wants to hold her turn and see if the ghoul will chase off after Kobort, then go last, that's an option. Then again, maybe the DM rolled a "1" on that cloak roll this turn, and the ghoul knows exactly where Gilly's at and will attack her next.
But at least now you have a better picture of what you're working with. Or at least a picture Gilly would be able to piece together in her head in the darkness.
So, with that picture painted for you, is Gilly still taking this Turn to creep forward? Does she want to do something else? Does she want to see what Ghoul #4 does first?
Again, I'm not trying to talk anyone out of anything, or into anything. Just making sure if things start sucking even harder nobody comes at the DM saying I didn't give them enough information to make a informed decision...