The last one I saw she expressed a considerable amount of stress with trying to keep up with the threads. She used the word exhausted, which I fully understand. I expect, and am hopeful, that she's simply taking a break so as not to burn out.
As long as she's OK, even if she decides to dial it way down, or even all the way out, would be fine.
I truly believe that she is OK, but obviously we wonder when someone totally disappears. That's the downside of our online lives, and it's something that we're all breaking new ground in dealing with. We'll find what works for us, but it's a learning process for the entire world right now.
I saw Bad posted today and I was glad to see that. TO may go a similar route. Instead of locking into certain threads, maybe just bouncing around, helping where & when she can, but not feeling obligated to maintain a constant connection.
I'm sure that I speak for many of us when I say that I've dealt with the same demons myself at various times.