The male doesn't hurt her but he cases her a lot! If he kills her it does not surprises me...
To make things work I'm almost 100% sure that 2 more females would do!
I have had C.irrubesco for a year now (one male and 3 females)...
When I got them I had them in a very small tank (because I didn't knew what I had bought) And they had that tank a little to long :S
But the male didn't hurt them at all and none of the females were stressed.
I'm gonna call the store that I bought the salivator pair from and ask if they can get me 2 more females...
I have another tank (120l) so maybe I have to put her there until I get more females
I don't recommend having only a pair of salivator!
It's stressful for the female and the male is probably gonna kill her...
Some call it a product of a mis-spent youth, I call it Rock n Roll ! 