From YT community:
An update from me,
I was really excited to get back to streaming for you guys after surgery, but something a bit concerning has come to my attention and I need to take a step away from this for a while. To everyone who was looking forward to me coming back, I'm really sorry. I'll come back stronger and we'll keep having fun together.
Until then, take care and keep enjoying Holo and cheering for the other girls. I'll see you soon! (I will be around to stream for and celebrate me and Kobo's new song!)
-Mori
Welp, that's one way to make her take an extensive break from work. Seriously though, I hope she'll manage to get some R&R in the meantime.