If all she brings to the table is negativity, all she mentions are problems, and all she does is complain, you can tell her that if she’d like to be reassigned to another project, since she seems to find this one unmanageable (a nice little dig suggesting her skills are lacking) she’s welcome to move to another team. That reframes the idea of her moving to another project as her failing, which she doesn’t want to do.

This individual finds every reason to include your superiors on emails, pointing out your mistakes. She tries to make it seem innocent—like she just wanted to “double check” with the bosses that this or that is supposed to be this way. But she finds a way to show them your mistakes that they otherwise wouldn’t have seen.

If a project must be broken up into several tasks, with each task requiring a different number of people, you’re always assigned the one-person task.

'Make love' at work--the right way.