Update, Susan just called and she did it!
She's exhausted and freezing, 50 and raining there the whole day. I knew she would do it, no stopping that girl when she sets her mind on something. She's just shy of 5' tall so that's a lot of strides for those short little legs. She even finished before her friend Carlos who was also running the marathon.
In case you can't tell I'm kind of proud of my little girl.