Sister Dora is a nun who was teached catechism to orphaned children.
Sister Dora taught catechism at a orphaned children of the Saint Agnes Orphanage. However, one of her pupils, blind boy Matt Murdock became problematic by refusing to attend her lessons and fighting with other kids.
She told Father Paul Lantom about it and asked him to speak with Murdock. Murdock then criticized Dora's knowledge of catechism, noting that she can't even defend Original sin and jokingly said that she should teach math.