She sounds like she is interested in communicating more effectively. This is an opportunity for connection. I think I would model validating speech in household/family discussions. I would help her by example and talk to her alone after she "drops the verbal ball". Only if she is receptive. It may also indicate where her head is at. I am sure she is struggling with her own demons. Your marriage problems are hard on her too.
I would continue to DB, but a healthy dialog about communication will only help the family. If I'm wrong, you may return this free advice for a refund.
