I recently dealt with a very frustrating person that I hope is out of my life for good. But I keep wondering if the way she communicates is an example of passive aggressiveness.

This person acts as if she is really friendly, but she constantly injects barbs in her statements such as:

"I can't work this device, though it doesn't help that you screwed up on the other thing."

Or instead of asking a question, she said "It would have been nice if you had done a better job explaining."

It's as if she needed to keep reminding me of an alleged shortcoming while pretending she is a nice positive person. After three weeks, I refused to do something she wanted on the grounds that she was not satisfied with anything I'd already done. And she went nuts and accused me of being "rude" and "defensive."

I get the sense it is part insecurity. She asks for help with a complaint and phrases questions like criticisms. I'm just curious what you call someone who communicates like this? Is it passive aggressive to say little nasty things and claim the other person is just oversensitive?