Shit like this makes me think she knows exactly what she's doing, and she's trying to position herself as the Sexy Nun archetype. She tries to be good but can't help that the world sexualizes her against her will (wink). She would be ever so grateful to any strong, Christian men who might come to her aid and defend her honor from the lustful satanists.
She probably thinks, in all honesty, that the average person is too stupid to understand the innuendo, and that only the clever ones will get it, like it's some exclusive inside joke.
You're correct, it's really hard to tell nowadays, and you proved your own point. This is a real tweet, but I don't blame you for thinking it's satire.