Fortunately for Victor and the twins, there is a grove of trees not even a stone's throw away. Aiko and Aikoko pick up Rosita by the arms and make a fake show of walking her into the trees as if, rather than dead, she's merely exhausted or drunk. With any luck it looks believable enough to the people in the distance.
There they dump her and quickly cover her up with loose leaves and a bit of sand. They both wonder how many days it will take for someone to discover the corpse, and whether it would be by happening to spot it, the smell, or some scavenging animal finding it.
As for the blood they simply throw an oversized beach towel on top of where she had been blowing Victor. Like most of their furniture at home, the towel is a dark brownish red to hide blood stains.
Walking back to Victor, who's certain to be impressed by their well-practiced, if hasty, cleanup procedure, Aiko resumes the discussion.
"So. Breaking her bones, is it? You wouldn't happen to have brought a sledgehammer, would you?"