I’m sure it’s been said, but postpartum depression.
Covid amplifies it, Keep an eye out for signs and changes in behaviour.
A lot of women change for life after children. The woman you married and dated might not be the same. Not trying to scare you, just stating.
"The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents... some day the piecing together of dissociated knowledge will open up such terrifying vistas of reality, and of our frightful position therein, that we shall either go mad from the revelation or flee from the light into the peace and safety of a new Dark Age."
-H.P. Lovecraft