She sat down and chatted with the young man until the leeches began to just fall off her legs - satiated with blood. The young man, enthralled and disgusted by what he just saw, thanked her and went on his way.
In addition to her general oddity, Myna seems to have issues with common sense.
A race of beings actually IS invunerable while in adolecence. They age, but cannot be killed. A miniority of the race (1 in 20) does not become invunerable, but rather becomes immortal at some point in thier adolecence, and ceases aging while being vunerable to death in all the normal ways. Another minority (also 1 in 20) Permanatly becomes invunerable after adolecence, but ages twice as fast as the race normally does. There is no known way to test for which of the three traits an individual manifests and the three traits cannot mix, as they are tied to the same gene, as it were.