Well, being a cynic, because she was in possession of a looted piece from some relatively powerful sources, a German museum! And the looting happened during a famous war, and the Germans are America's allies now and like really powerful allies.
but reading closer it says:
>Back at home, Young had a problem: She was in possession of a looted piece of ancient art. She couldn't keep it. She couldn't sell it. And giving it back to its rightful owners was a lot harder than it sounds.
So it sounds more like she felt she couldn't keep it or sell it because of her morals.
on edit: of course if she had sold it maybe 10 years down the road the Germans come and say we want our head of Germanicus back please, then either the people who bought it are on the hook or maybe also her for selling stolen goods (depending on laws and how much people want to enforce them)
but reading closer it says:
>Back at home, Young had a problem: She was in possession of a looted piece of ancient art. She couldn't keep it. She couldn't sell it. And giving it back to its rightful owners was a lot harder than it sounds.
So it sounds more like she felt she couldn't keep it or sell it because of her morals.
on edit: of course if she had sold it maybe 10 years down the road the Germans come and say we want our head of Germanicus back please, then either the people who bought it are on the hook or maybe also her for selling stolen goods (depending on laws and how much people want to enforce them)