I don't think she is ever gonna come back as a steamer on her own channel. My theory ( and i know their is a lot of cope in this) is she will do her own random projects, drop them on her channel when she feels like it, and occasionally collab with other like Nimi or Dooby on their channels, i don't think the Senzawa channel (or a new one) will ever see a stream itself. She may never even have a debut, just show up when Nimi's playing a group game and act like nothings happening.
that's the good stuff.
I don't think that's a cope. That's an entirely reasonable understanding of the brain worms behind the screen with Sen/Gura.