Here’s more info about Jennifer:
Jennifer Leann Carpenter (born December 7, 1979) is an American actress, best known for her roles as Emily Rose in The Exorcism of Emily Rose, as Debra Morgan in Dexter, and as the lead role in the 2008 horror movie Quarantine.
It was reported in 2007, that she was dating her Dexter co-star Michael C. Hall. They announced in early January 2009 that they had eloped on New Year’s Eve in California.[Source]