you are not right. The results of the 2018-06-30 post are the same as those of 2018-07-04. Check
In the second post the results were not edited
FIRST POST (created on 2018-06-30 10:39:51.000)
https://steemd.com/tx/54ea3c3aa3c9ef0e06a31bf2927bbce400f027f3
POST EDITED (edited on 2018-07-04 14:26:15.000.)
https://steemit.com/ita/@drago18121996/the-blocktrades-world-cup-or-my-selections-for-the-last-16
It doesn't matter what was changed, it was edited after timeline. Contest authors were exporting data from blockchain and later edits discard posts.
What @lukmarkus is saying it's right, we have to obey the rules otherwise it would be unfair for all the rest. Any edit after the deadline renders the post invalid, sorry.
if these are the rules, agree. but she was really unlucky