She can, as MANY Christians do, wear a cross around her neck. If she wears a crucifix, then she will be labeled as a "Catholic."
MOST Europeans could care less. They really do have their own problems to deal with and really don't care that some stray foreigner wears a cross/crucifix around her neck.
Yes,most Europeans....probably *all* Europeans...could care less what her religion is.However not everyone *living* in Europe is "European" (if ya catch my drift).And a noticeable percentage of such individuals....well,you know.