You have to
separate out some of this stuff.
It sounds like she has sensory defensiveness - texture of her food can make her vomit. That's not
a "pampering" thing, it's a physical reaction to textures.
The other stuff sounds like learned behaviors. On the one hand, it's fine if she wants to change her dress all day at home. Put on a different one, hang that one up. That's fine. Before she can change again, the previous outfit has to be hung up neatly.