Thanks all. Lots of excellent responses to consider.
I like the question regarding motivation. She appears to simply want to give herself a challenge. I do not worry about weight issues with her. She has a solid physique. I like the fact she Nordic skis and rows as it shows me a balance in her thought process regarding health. Of course there may be deeper issues and running such a long event at her age is a way of dealing with them but I don’t see them (yet, at least).
It is always my hope that anyone I give advice to will stay in running or a lifetime activity sport after any influence I may have is no longer in a day to day presence. Her involvement in a healthy lifestyle is very important to me. I hope she’ll make good decisions in all phases of her life because she is a runner and loves the lifestyle.
I’d love to hear from people like JK, the Brojos, Ken Martin, Hodgie-san, Malmo but everyone, well, most everyone, here is great so far. Thanks.