Ann was indeed still alive then and she did live/work in Pakistan during the early to mid 1980s. Husein visited her there and had his little trip with his college buddies then as well. Ann didn’t died until 1995 and was cremated.
http://www.theobamafile.com/_family/Anna.htm
http://pakistaniat.com/2008/09/01/barak-obama-pakistan/
i don’t dispute these reported facts