"You do not appear to be the subject of any ongoing spells except Tongues. It's not hard to fake that. I can have everyone Dispel Magic on you, which is harder to fake. I can also just put up an antimagic field around you, if you'd like, which will cancel any mind-affecting enchantments on you and to my knowledge cannot be subverted or falsified. Abadar did also pay Asmodeus to communicate to his followers that you were absolutely not to be mind-controlled, so I don't expect you are. 

With your permission I can cast Spell Immunity: Detect Thoughts on you, which will stop them from reading your mind, which they might well be doing. We aren't doing it. 

There's also an invisible halfling next to the girl Cayden's been puppeting."

"You do not appear to be the subject of any ongoing spells except Tongues and Share Language. It's not hard to fake that. I can have everyone Dispel Magic on you, which is harder to fake. I can also just put up an antimagic field around you, if you'd like, which will cancel any mind-affecting enchantments on you and to my knowledge cannot be subverted or falsified. Abadar did also pay Asmodeus to communicate to his followers that you were absolutely not to be mind-controlled, so I don't expect you are. 

With your permission I can cast Spell Immunity: Detect Thoughts on you, which will stop them from reading your mind, which they might well be doing. We aren't doing it. 

There's also an invisible halfling next to the girl Cayden's been puppeting."