yoda sense truth

Ventress looked wary, but she accompanied Desh and Anakin outside into the corridor. When the doors closed, Yoda looked around at the Council.
"Cooperative, has she been."
"As much as someone like her can be, yes," Kenobi agreed.
"Truth she has spoken, within this chamber. Loves Vos still, she does, and lead us to him, she will."

Dark Disciple, Ch. 27, pg. 200