Megan was a member of DA during her seventh year at Hogwarts. She is now married to Zach Smith and they have eight children.
She did not take part in the Battle of Drum Ciett as she was pregnant with her daughter Morag. It is implied that she and many of the other pregnant mothers, went to help the Coven perform some counter-Sabbat magic.
Her mother Hestia, and Neville's Alice were good friends, so there are photos of the two of them playing together as babies.
Her mother Hestia was one of the victims in A Peccatis.