First of all let me say how sad I am for you. I completely understand your pain. My two girls Chattie and Chizzie have to be separated 24/7 365. As long as there is a "baby" gate between them they are fine. They sniff noses. But if they are undivided then they fight -- rehoming one isn't an option here we just deal with keeping them seperate. Chattie is my heart

and Chizzie is my laughter

. We have adjusted to a seperate life and everyone is happy, healthy, and safe.
Good luck to you. I hope the peace you have established is long lasting.