Is she consulting with her physician on this? That's potentially a significant change. I imagine she's been on the ADs for quite some time. My now ExW had been on them 20 years when she suddenly stopped taking them a month or two before BD, along with other things like weaning off breastfeeding our then D1, and I always wondered if that was at least a factor in the situation. Her transition off ADs should be managed very closely, especially if they've been in her system for years.
Me:39 Ex-W:37 M:7 T: 9 S:6 D:3 BD/IHS/Confirm EA/PA: Feb '20 OM1 affair ends: May '20 W/OM2 & moves out: June-July '20 W files for D: Jul20 OM2 confirmed: 9/2020 Divorced: May '21