I mean, based on what
Konstantinus asked, she definitely has an hiddeng agenda and she isn't honest at all in her desire to help. Her plan was to mind control the monks, and she did.
While it is possible that her main goal is to find the perfect assistant-slave (which, after encountering Ethan, would've theorically lead her to not continue with her plans about the other monks, as it was clear she was targetting the former for that goal) I wouldn't disregard the possibility that she's more or less on the same level as the other villainesses, since her reasoning for mind controlling the monks could very well be about selling them as slaves.