"Stay in there and I'm not gonna hurt you." This wasn't meant as a promise, reassurance or a threat (though it probably was all of the aforementioned.) It was simply because Zoe was tired of dealing with Lena. Now the adrenalin started to quiet down and the pain in her shoulder got more intense. But with the gun now in hand what she had lost in blood she regained in confidence. Zoe walked over to the thug and kicked him in the stomach for old times sake. Then she put the gun to his head and readied it to fire. But she did not pull the trigger. Instead, her cold -almost calm- voice spoke. "No sudden moves. Now put your hands where I can see them, slowly."

All the sound and crying automatically made Zoe more alert of her surroundings. But that wasn't what truly mattered right now. No, she had the target under control and now it was time to call the police.

Few people had a landline nowadays so the safest bet was probably to search the target for a phone. Even if it had a password it probably had emergency call functions. That would be fine. And if that didn't work Zoe could always go out to the seemingly bustling staircase and ask to lend a phone. But then she would constantly have to check back and make sure the target didn't do something she didn't agree with.

They probably came due to the noise of the gunshot. "I got shot," Zoe said a bit too casually. The statement was obvious. After all, there was a hole in the cloth on her shoulder and blood smeared around it. After the statement, Zoe called the police via the emergency call option. "Would you lower your guns? As you can see I don't like guns being drawn on me." She moved the hand holding the gun as if to point towards the thug.

(Fair point)
Her new opponent had made a huge mistake. A sudden move. And right now Zoe was jumpy and unable to think clearly. It was all too much. What calmness she had gained by having the target under her gun was lost and some more stress had been added with this new thug. Now it was all too much. What was left of her ape brain, the part the adrenaline didn't block, could only come up with one solution; shoot him in the head, eliminate the threat. So that was what she did. Zoe raised the gun and shot for the new opponents head.
She hadn't put down the phone. No, It was still against her ear. But she didn't respond. She was sitting there with her eyes wide open and unable to speak for a bit of time. Externally she must have looked like an animal. Both a predatory bird looking for its prey and a scared mouse ready to run at any moment. Internally she was furiously fighting to lower her own heartbeat.

Now that no one was charging at her some remnant of Zoe was able to return to her body. She took a deep breath. Or, well, tried. It was shaky and didn't go further than the top of her chest but gave her enough calmness to formulate a short sentence, "target is under control in the projects."

"Yes." Zoe was returning to herself quickly now with help of this conversation she could focus on, though she was still shaky from the adrenaline overload. "Got shot in the shoulder but I'm fine now." She didn't really want to mention that she shot after some thugs but she didn't need to either. "The target is also fine."