I am so sorry, to hear about Tikeya.
Poor girl.
It is a shame you have to separate them.

I remember when Rocky and Sheba went at it a couple of times.
Lucky I was their and grabbed Rocky before he could
hurt her. After that I took everything out of the back yard and in
the house they could possibly fight over. I kept them separated
for about 6 months when I was not home to supervise them.
I stopped letting them rough house with each-other too.
Eventually I was able to keep them together unsupervised.
Till this day, I never have anything laying around they can fight over
including me.
(of course Sheba is so old now)
I was told early on by a woman who ran an Akita rescue,
that dogs never forget and once they have a drag out fight
it is rare they can be together again.
I hope that is not the case with you.