You were patching her up again.

After going down during the extermination she’d accidentally cut her back on a disregarded angel’s spear someone had most likely forgotten to collect after throwing, causing a gash to form.

After slowly escaping Adam’s sight she walked over to your apartment like house and entered, surprisingly politely asking if you could mend her cut.

You said yes, obviously, and there the two of you were now, her sat beside you on your bed while you stitched her cut.