[ The honest truth is that Jolene had fought against imprisoning Yennefer in particular. The idea of throwing a fellow mage behind bars turned her stomach. But she is not in charge, and Ambrose made his call. So she doesn't mind sharing a bit of information that really isn't all that top secret anyway. ]

Their idea of how the Singularity should be treated differs greatly from the rest of us, from what I've heard. But that's about the extent of it. We don't even know exactly what their idea is, just that they're trying to find - or convert - others who agree with them that we're all wrong.