What triggers the attacking? Are there toys around? Food? Treats?

Does it start as play and escalate?

Does it come totally out of nowhere?

I wouldn't leave them alone together unsupervised for at least a few months. I don't know what your situation is when everyone leaves the house, but I would have Kaedyn crated in a different room.

Also, I wouldn't allow Kaedyn on any furniture until this problem is solved.

Where do both dogs sleep at night?