Just to get a statement that sounds factual in here.

March 1, 2013.
That is the date Mary Latham gives,
as the date of her mother's death from cancer.

I found this date, not at "dot today,"
but at Mary Latham's tumblr site. Here's the address of the page:
More Good -- The Mission.

The "dot today" site links directly to the tumblr site
which DOES appear to have reports, updates, and story summaries.

It looks like this lady is sincere, this is not a scam or what have you.