The inclusion of Sheva always felt strange to me in Re5 to be honest. Like Capcom was trying to cover their ass from more accusations of "racism" because re4 was lone white guy mowing down spanish people in europe. But I might be wrong because Resident Evil 6 did not feature an Asian partner in China battling against the C-Virus. Speaking of that, Resident Evil 6 really did call it, didn't it? Big yikes.
Oh, back on Sheva. Even her own quote when she meets Chris was "That's why I'm your partner, help put them at ease."
Personally, I liked Josh more than Sheva and wish he would have been the partner instead.