So, here's what she says:
"I would like to permanently overcome postpartum depression so I can enjoy parenthood and keep from having major depressive order."

It seems to me that your original phrasing is perfectly suitable. I don't know if there's any sense in asking for a permanent end to depression, because as you say, it's very likely that there are complex and necessary factors contributing to the situation.

Hopefully this was helpful.

-Cliff