Who? wrote:
Never heard of her. I guess you have to get publicity any way you can.
She isn't a publicity-craving actress and mostly does smaller indie films. You might recognize her brother, Jake, probably most famous for his gay cowboy role in Brokeback Mountain.
http://www.elpais.com/recorte/20061229elpepuage_3/LCO340/Ies/hermanos_Jake_Maggie_Gyllenhall_encontraban_huespedes_hotel_incendiado.jpg