Good Lord, Poor Alissa. She's not even among my top 2-3 favourites of the US girls, but I feel compelled to defend the girl. If she manages to place in the top 2 at your Nationals, a very competitive pressure filled competition, for the second year in a row, it would be a huge slap in the face not to send her. It's not like Ashley has posted far and away superior international results. And Alissa may well have been able to post a comparable score/placement at the grand prix finale had she qualified, and she was indeed not terribly, shamefully far from having qualified (much to my own surprise). Luck of the draw even plays a role in getting that opportunity. Ashely has shown well for herself, but I fail to see that clear superiority to her US competition has been displayed here. Sure Ashley might have more potential, and slightly better technique leading one to hope for better consistency... but laying it down when it counts (i.e. Nationals) should be part of demonstrating that potential and consistency.
In NO WAY would it be fair for USFSA to decide whom to send based on pure conjecture on who is likely to place higher at Olys, not when the contenders are this close. Ice is slippery! Predictions can and do go wrong. And being an athlete is all about earning the right to rise to the occasion and surprise everybody.