I am not comfortable giving a assessment of the second example with both sentences. Rulings might turn out either way depending on context and I'd advise not to publish anything close to that. It starts going into Volksverhetzung territory.

She tweeted something like the second example, first sentence only. There should be no legal problem with that (it was just a pretty extreme wording of "the police shouldn't tweet in Arabic"). Sorry if I didn't make that clear enough.