Is being over prepared for emergency situations rude?

Is it normal to feel irked that someone was more prepared than me, and many others, at a hurricane shelter? During Irma, we all had to head from the coast to either more inland areas or upstate. At the church shelter we took refuge at, a person had pitched one of those privacy bed tents over her cot (with bedding and all) and stored her belongings and provisions in a locking truck which she kept at the foot of it. She had her own stash of food/snacks, books, personal gaming unit, and smartphone with movies. She easily and happily used these items in her little tent hovel and offered none it up to the rest of us. While we didn't expect it, it would have been nice. Not all of us could be so organized and put together as she was. Was the bed tent really necessary? What about locking up all her stuff, as if the rest of us were criminals looking to steal from her? Isn't the Nintendo DS just a bit much when people are charging their phones to call home? And really, I'm sure she had more than enough snacks to last one person. It was only three days, but each day it grew more annoying because she wasn't using the shared space like everyone else, she just kept to herself with her books and games and movies. I was quite astonished that she joined us for hot meals. I brought this all up to the people running the shelter the first night and they said that they were fine with her setup and that she didn't take anymore space than anyone else. Would anyone else have been annoyed at this?