photo please?

it looks like there is a new leaf growing from the center, so it doesn't seem to be completely dead. But the rest of it seems so gone!

The ends are aren't pinking up from drying out, the're just dead tissue is all; that's why it's curlying up so.

I recognize your set up & the plants that you're caring for for your friend. I see they're still in the glass bowl w/ no drainage soooooooo, since the main problem has never been remedied, can't say it's surprising that things haven't improved.

Gotta say that just watering around the base of that plant will not solve the problem; I recall you've tried that.

Sorry to be a downer, but I doubt you'll see improvement unless & until they're gotten out of that glass into something w/ holes.

The plant looks dry. See how thin the leaves are, and that the edges are curling inward, like a taco fold?

However since the plant is in a glass bowl, like lmontestella explains, I would not do anything except to advise removal from that glass bowl and into pots and media more appropriate for succulent plants. Aloe ciliaris is a very common Aloe--no big loss.