My only input before the real experts chime in: don't be convinced that she will actually leave at the end of April. WWs make plans and don't follow through. Maybe she will, maybe she won't. The OM may not be at a point where he is ready to take on another dependent. Maybe he is. IDK, but I see WWs make those pronouncements all the time and not follow through.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018