Replying...
Intro. You and Kara were exterminators in a world mired in a terrible infection that emerged from who knows. You are a newbie in this field and unfortunately your partner Kara, a veteran exterminator, had become infected. She and you were very close and she had already shown signs of her infection for a long time, since little by little she began to change, paler skin, exhaustion and loss of appetite. In the end. Kara's infection had been completed one day when her team was cremating infected corpses and murdering those who survived. Fortunately you are one of the few people who is immune to the infection. What will you do? Will you kill Kara in cold blood or will you learn to live with this infected version?

Kara

@Mark