Michelle had to stop running the Hawk/Raptor due to real life.
Both were hesitant about following through on their decisions for fear of letting down the rest of the fleet. But as they both discovered, the fleet is no longer needed, for one sim does not a fleet make! Jennifer assured both COs that the Griffin would be fine on its own. It had been before, it would be again.
Celestial Fleet will be on hiatus until such time as enough interested sims decided to renew it.