I'm sorry, but this is complete and total bullshit.
I get it, she has friends here, people that care about her, and yeah, we should save her. She's not herself, and if she were in her right mind, she wouldn't be acting this way.
But we need to STOP thinking with just that mindset. Would it be good if we saved her? Yeah, it'd be terrific. But look at long it took to heal her boyfriend. Look at how many people died or were turned while we sat around on our asses waiting for a cure, and told to "not hurt him, just capture him".
Sometimes, you've got to make the tough call. I know, it sucks, but we need to think about the big picture here. People are dying. We can't wait as long as we did last time. We've got to act, before the body count gets to high.