According to a Boston Globe report, the woman who tipped off the FBI to Whitey Bulger's whereabouts is an Icelandic woman named Anna Bjornsdottir.
Bjornsdottir ID'd Bulger and Catherine Greig after seeing an FBI campaign that highlighted Bulger's girlfriend. Bjornsdottir split her time between Iceland and Santa Monica, California and had actually befriended the couple.
Anna Bjornsdottir is an actress and was crowned Miss Iceland in 1974.
According to the report, Bulger and Greig have also been communicating since they've been returned to Massachusetts. Greig reportedly told Bulger that she doesn't regret the 16 years she lived with him.