We need full transparency.
Amy needs to post the data relating to the 53 marathons in 53 days. Was it recorded on a GPS sports watch?
Amy needs to show evidence that the treadmills used in the 7 day event were calibrated, that the distance covered was as stated (521 miles) and that she ran the whole distance. I haven't seen that posted any where yet. Witness statements from people with a known relationship to her do not count.
Further to this I would like to see Amy publish the breakdown on how much of the donations from the 53 marathon and 7 day treadmill event went on 'expenses' and how much was actually donated to good causes.
Without doing the above I'm afraid doubts will always follow Amy.