Detective Gage barked at the blonde Batgirl. Stephanie had been butting heads with him the entire time on this case, but this was a breaking point.
Whipping around, she rounded on him faster than he knew how to react to, his anger almost flickering away in his surprise as the 5'5" vigilante snarled at him, snagging him down to her eye level by his tie.
If any of the other Bats that ran around the city were around, they would have known Gage had now entered dangerous waters. Stephanie never pulled you in to yell at you. Get all up in your face, yes. But this? She had entered the rarely touched 'composed rage' stages of her self righteous fury.

"Don't you DARE presume to know me, or my coping methods, Detective. I either make my jokes and try to pretend that I didn't just walk out a shipping container that I was knee deep in human remains in, or I completely lose my sh*t and beat people to death, you don't get to make arrests, only pick up more remains. Which do you prefer?"

Letting go of his tie and shoving him backwards as punctuation on her biting sarcasm, Steph didn't give him a chance for rebuttal.
She had a human trafficker to go beat to unconsciousness.