There’s also that cop you have to get rid of to help some corrupt cops she’s been getting in the way of.

You can either kill her, helping said corrupt cops, or warn her to leave town, thus helping her (to stay alive, at least, though obviously not to do her job).

Either way you’re helping cops, but the NCPD looks like trash (which can also be said for River’s storyline), so there’s that, at least.