How long does the turn last? Should I cast it now? Does anyone still need healing?
Nothing imperative is going on so you could use it at any point until next turn, when Kelgar is actually back up with the rest of the party and ready to depart. Right now Ty is lowering a rope and Dorgath is nibbling on stonebread, but everyone else is free to take some other action...
You could try to heal either Tomas (11/21) or Kelgar (13/19) with Finger of Life, and if it succeeded you'd earn 5 gold for each Wound you restored. Healing spells award gold in this game somehow—do not question it! Usually that applies to Tomas and Kelgar (not Jekaena because I hacked into her account and diverted the funds), but it can technically happen for Throg as well because he is weird.
To save time, I rolled just now and it was a 4, so Throg gets 20 gold and can pick either Tomas or Kelgar to heal with his Finger. Pick whichever you like better. Or whichever you dislike less. Or whatever. Flip a coin. Decide based on a very sophisticated analysis but lie to us and pretend that it was all just a coin flip. Up to you.
Also, I rolled for Ty's rope usage and it worked. So it looks like we're ready to move, for real, this time...