The Arabs have murdered thousands of Jews and continue to murder Jews to this day. The agony and suffering they have caused and continue to cause to Jews is unfathomable. Nothing against that Arab family in particular, they seem like good and decent people. But I think his heart should have gone to a Jewish kid who needed it. I'm sure there are some on a waiting list. (Just my opinion)
Maybe none of them were a good match for the heart, but I agree with you that a nation should look after it's own first. However now that she's received the heart we shouldn't begrudge her it.