I think she is completely stuck in that ‘day in the life’ style content that was a thing several years ago. She doesn’t do interesting things, and doesn’t make boring things entertaining, which is absolutely needed to do well.
Probably the need for validation is what gets her through sometimes. Otherwise, surely, as you say, she would have the presence of mind to see how much of a fool she looks?
Im always surprised to see how little she understands of non military life. My husbands job often gets in the way, and I know this is the same for lots of my friends too. She genuinely seems to think civilian families live like an Enid Blyton story, with the dad home to help at 5.30 on the dot.