Sodevestated....as I have said, before, I don't thinkit is a good idea for you to live by yourself for a good while...I believe that it wou ld be too much isolation and alone time for someone struggling with postpartum depression....
How about the idea of you living with your m other in law for a while? After all, she is Aaron's grandmother and you two might be able to support each other's grieving process...and, she could be a big help in caring for the baby......
If that isn't possible....don't just take my word for it....
I suggest that you discuss this with your therapist or your doctors and the pediatrician....
Get input from those who have dealt with this situation....
When you do move back to the bigger city...I do think that there is more opportunity for you to connect to a better social life....with a support group, other mothers, etc......that part will be a big advantage...but, I still don't think you should live, alone, in your apartment.......