I'd recommend going for Officer if he really wants to serve, I'd think less of him but he will enjoy the experience MUCH better.
Now yes they do see a back put together like a high dollar tinker toy as unfit for service- though the many 'civilians who have learned to salute' jobs in the military should be open to her... but that is 'military intelligence' for ya.
Anyhow if she REALLY wants to serve there is another avenue open- the much reviled Civil Service sector. Those overpaid and under worked GS's who support the military. An old GF is one and she gets to travel the world, working on military bases. They do everything from administrative to translators- a former tacti-cool student learned arabic and the alphabet agencies lined up to court him- the big dummy enlisted in the National Guard for OCS and be a 'Military Intelligence' guy.
Anywho, where there is a will there is a way. She doesn't need to dress up in gawd awful clothes to get a good defense job with bennies. I'm amazed the number of civilians who work side by side the military folks as contractors or GS...
Best of luck