It strikes me as odd to use "indifferent between" rather than "indifferent to", but am having a hard time rephrasing the sentence so that it includes both options.
The structure of the sentence I'm looking at is:
"X is indifferent between doing Y and doing Z"
Now of course the fact that X is indifferent could allow me to write something like, "X is indifferent as to the future course of action", but I want to include the two options (not least since there may be more options to which X is not indifferent).
I suppose there are two questions here:
Is "indifferent between" truly ungrammatical?
How can I more elegantly phrase such a sentence?
Edit: Since I now see that my simplified example doesn't quite explain what I'm asking, the actual sentence I'm looking at is:
The risk adjustment should reflect the compensation that an insurer requires for bearing this uncertainty and reflects the point at which the insurance company is indifferent between fulfilling an insurance contract with a range of possible outcomes and fulfilling a liability with fixed cash flows.