C.G.
It does take time for antidepressants to work, and time to find the right meds and dosage levels.
I agree w/ the PP-a group would be great. I think it's harder on Christians b/c we put extra guilt on ourselves knowing that God hates divorce, just MO, though.
I'll be praying for you sister.
Also, there is going to be the normal grieving process to deal with-again, the group would help.
Praying can be hard during times of depression. She may want to look up (or you could look up and print out) some Scriptures for her to read/memorize when she can.
My favorite is Rom. 15:13 May the God of hope fill you with all joy and peace as you trust in Him so that you may be filled with hope by the power of the Holy Spirit.
Blessings and prayers~C.