Actually, oddly enough, it was jihadists who decapitated a Christian girl.
An undated but apparently recent item from the Barnabas Fund, “Angola – Girl Decapitated In Attack By Muslim Extremists”:
Muslim extremists recently attacked the Christian community in the town of Andulo. In an horrific incident, the school-age daughter of a deacon at one of the churches was decapitated. Forty believers were assaulted or tortured, and one of them needed 20 stitches in his head. The mob burned three church buildings. They also went to believers” houses to intimidate them and damaged or destroyed items of property. Stones were thrown at the headquarters of a local Christian project, causing some damage.
Commenting to Barnabas Fund, an Angolan Christian leader said that the local police were unable to stop the attack and fled the scene, and the government seems reluctant to take action against Muslims, perhaps because it believes that Muslim aid is valuable to the nation. The community in Andulo is confused and disturbed, not least because they had believed what the Muslims told them: that Islam is a peaceful religion and that Muslims and Christians are brothers and sisters, worshipping the same God….
Anyone who believes that who then notices the large number of violent Islamic attacks around the world will ultimately become confused and disturbed.