I'm all ears. Please proceed.
Okay, let's start slow. There are two pieces of evidence placing Stanley Ann Dunham in Seattle in the later half of August. Her enrollment to attend the Washington University, and the testimony of her friend Susan Blake.
Do you need me to hunt up the links which establish these two pieces of evidence, or are you already familiar with them?
While I am waiting for your answer, i'll just drop this link here where you can see it.
http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=34618044
Scroll down and look at where here two infant sons were buried and when.