For the moment, yes

"Oh, sis," Kristin slurs lustfully, "I'm so wet. Will you fuck me?" she lilts, grinding her soaked panties across your leg. The perversion of your sister masturbating herself on you in the middle of a church spurs you to action.

"NO! By the power of Christ, I will save you, Kristin!" you scream with holy purpose. You can feel it: divine power surging through you! God has answered your prayers in this time of darkness. Apparently, Kristin notices too, and shrieks in fear jumping off of you. You waste no time and snap Mary out of her fetal position and drag her through the ruined door.

Taking the stairs two at a time, you and Mary rush down the spiral staircase.

"Oh, don't you love me? I need you, sister. I need you to hold me tight. I need you to lick my cunt!" Kristin's singsong blasphemy is coming from above on the stairs, but it is closer than you would like. Mary notices too and looks up and back, screaming as she sees your infected sister just one flight above. Panicking, she tries to jump the rest of the last flight and pulls you with her. You tumble with her and land in a heap at the door. You try to reach up and open it, but with a slam, the door is thrown shut again. Kristin has caught up.

"Ooooh, already on the ground for me." Kristin licks her lips. "I can't wait for what comes next!" She says this with a small clap and childish giggle like she used to do a few years ago. Your sister's soul is at stake. If the virus can be purged, then by all that is holy, you will do whatever it takes!

You reach into your pocket and retrieve the flask. With a grim nod, you open it and throw holy water at Kristin's leering face.

Immediately, Kristin shrieks as black smoke rolls off of her skin. Mary grabs your arm and pulls you through the door, just in case this fails and you have to run. You, however, stop her so you can witness God's plan for your poor sister.