If you don't know your mythology you'll be puzzed at the revelation of the child's name. If you do know know your mythology you were probably expecting it.
Of course if I remember my mythology correctly Mordred was Morgana's son - by Arthur?
Morgana was certainly being maternal toward the boy, especially given the revelation she is herself at risk of being put to death by Uther just for posessing magical skills.
More nice clothes for Morgana, love the Red Riding Hood getup - but isn't red a bit of a stupid colour to wear when you're trying to sneak about at night?!