Head towards the cries for help

You stumble through the darkness, feeling your path with your hands. You lose your way more than once, but you correct your direction each time they call out. Eventually you reach a sort of concrete room in the wall, with bare concrete walls, a bare concrete doorway, and a cold concrete floor littered with infected bodies. There's a flashlight weakly flickering on the floor, illuminating a fragment of the source of the noise.

She lies there limply against the wall, blood dripping down her bare legs, the only remains of her decency left is a shirt and a jacket in tatters. Her hand periodically sneaks under her shirt to fondle her breast, but she visibly struggles, trying to stop herself. She looks at you with one yellowed eye, expecting another one of them, but is surprised to actually see another survivor.

"...Please, shoot me. I can already feel myself turning... Please fuck me-Ngh, no! End it! I beg you..." Her voice sounds weak and coarse as she pushes a pistol in your direction. You squat by her and try to tell her there must be another way, but she shakes her head sadly. "No... This is the only way." She puts the blood covered gun in your hand, wrapping your fingers around the butt, and guiding the barrel so that it touches her forehead. She is already turning a shade of grey, a yellow blister expanding forth from her skin.

Your hands are shaking. "Please..." She mutters, her hair covering her eyes. There is a long pause.