I thought Rhode had a lot of potential to be a conflicted rival/friend/reluctant enemy. Stuck between her code of conduct, responsibilities and her personal investment in your character.
I was disappointed when the writers tossed this excellent opportunity out the window and she just turned on you without any hesitation. Perhaps a little remorse, but she wasn't conflicted at all and didn't even entertain sparing you as an option.
Real human beings just don't behave that way, in such frigid absolutes.