How does one respond to those who believe that the images found among Christians are of Mary and Jesus, peace be upon them, and that Mary, peace be upon her, is from among the Christians?

The image of Mary (peace be upon her) that Christians portray today is incorrect; it is a lie and a slander against her, as they depict her as an immodestly adorned woman, while Mary (peace be upon her) was chaste and pure.

As for the belief that Mary (peace be upon her) was a Christian, this is correct, but according to the true Christianity before its distortion. The origin of Christianity is the religion revealed by God to Jesus (peace be upon him), and Mary (peace be upon her) was among those who followed her son Jesus (peace and blessings be upon him).