If she is working long hours like that then she most certainly is not doing any real research on her own and instead is getting talking points from others.
Here is what I do that I have found to be very effective when debating/engaging/conversing etc....
I take the time to point out the Treacherous Trio:
1. Confirmation Bias
2. Cognitive Dissonance
3. Motivated Reasoning
I let them know that I apply these constantly myself when doing my research.
Also, when I ask them a question, I do NOT allow them to deflect or obfuscate and will insist that they answer the question. You have to do this as it forces them to confront their bias.
Good luck!!
She is never deceptive and I have great respect for her honesty. She is just wrong.