As a child, Narcissa was afraid of drowning, due to an incident while on holidays on the French Riviera. Mostly, it is the loss of control while swimming that terrified her, and the possibility of not managing to come back up by herself. Conquering her fear did not happen in any sort of big moment, however. There are absolutely no stories of self-defining bravery to tell. Instead, it happened through time, as the blonde slowly but surely became comfortable with deep waters again ( little by little, summer by summer ). This will never be an environment where Narcissa is entirely comfortable, but she is definitely not scared of drowning anymore.