She has been outspoken in her criticism of Hezbollah and Hassan Nasrallah, and she is living in exile in the US.
She just attended the Christians United for Israel conference in Virginia, and posted selfie videos on her Twitter and Instagram, angering many Lebanese and other Arabs on social media.
They were especially angry at her singing a Hebrew song on video at the conference - Hevenu Shalom Aleichem.
Her recent posts prompted the Lebanese commissioner to the military court, Judge Fadi Akiki, to accuse Maalouf of crimes violating the law boycotting Israel and of making statements that would stir up sectarian and sectarian strife.
The controversy caused her to become a trending topic in Twitter. So Maalouf tweeted about that too, writing, "Thank you to my followers from Hezbollah. Thank you to all my enemies. If it weren't for you, I wouldn't be trending today #ماريا_معلوف."
Poking Islamists in the eye is something we can all agree is a wonderful thing.
