Who is AerinThe main character from, from Unfinished Tales of Numenor and Middle-earth and what is their importance?

Aerin appears in the "The Tale of the Children of Hurin." Related to Turin, she was forced into a marriage with Broda. She also made sure that Morwen had enough food to eat and provided emotional support. Aerin had a large part in Morwen and Nienor's survival.