Mara was the nanny taking care of Nei, the son of Paomu.
In the quest The Thieving Nanny players find out that Mara took Paomu's Coin Purse - as she explained herself to Nei - in order to place a bet on "drake races".
Nearby the Haiju Lagoon players can find some Bleached Bones and a Ravenous Drake who holds the a.m. purse. It looks like Mara was killed by that drake.