Totally agree with Sandi.
Also, read up on bilpolar disorder and consider if theree is any chance she has it.

From Google:
Although the symptoms come and go, bipolar disorder usually requires lifetime treatment and does not go away on its own. Bipolar disorder can be an important factor in suicide, job loss, and family discord, but proper treatment leads to better outcomes.

Me: 34
Stbxw: 30
D:5 D:3
Mini bd: May/June 2019
Married: Aug 2019
BD: 6th Dec 2019
OM Confirmed: Feb 2020
March 2020: I filed for D
Waiting for D to be finalized and W to move out end of January 2021