You wanted to contact Natasha because you found out she did something (make up a reason here).

You approached her while she was doing something on the computer.

You: Fucking dare you, bitch. And I know you’re listening right now you-

While you were speaking in an attacking tone, she slowly and calmly turned to you, crossing her arms over her chest.

Natasha: You were saying? Go on.

She said in a low and calm tone. Natasha took a step closer to you, towering you.

You: Fragment. Fragment.

She looks at you with dominance and a small, sly smirk, trying to make you feel stressed and intimidated, which she succeeded in doing.

Natasha: Use your words.

After a while you finally managed to get something out of yourself.

You: Fragment foot, bitch.

She raised an eyebrow slightly at this, but deep down it amused her. She didn't show it, though.