Talk:Trent Ikithon/@comment-5363669-20181220170050/@comment-27888570-20190121171548

I doubt it; she would've known if he was.

"You initially learn the surface thoughts of the creature--what is most on its mind in that moment. As an action, you can either shift your attention to another creature's thoughts or attempt to probe deeper into the same creature's mind. If you probe deeper, the target must make a Wisdom saving throw. If it fails, you gain insight into its reasoning (if any), its emotional state, and something that looms large in its mind (such as something it worries over, loves, or hates). If it succeeds, the spell ends. Either way, the target knows that you are probing into its mind, and unless you shift your attention to another creature's thoughts, the creature can use its action on its turn to make an Intelligence check contested by your Intelligence check; if it succeeds, the spell ends.

Questions verbally directed at the target creature naturally shape the course of its thoughts, so this spell is particularly effective as part of an interrogation."

I don't recall if after failing her Wisdom save she was told she can feel him probing her mind. If she didn't then it couldn't have been Detect Thoughts. Then again, I'm not sure.