I am assuming ur bun, has free roam, most of the time? – basing that, on the comments that say she likes to hide.
My bun, has mostly free range too, and, I can give him small pets, when hes ” out and about ” , but, mostly hes like ” nope, ty ma, I gots stuffs to do “… when hes in his x pen tho,.. its a totally different story,.. he relishes in being loved on, and brushed – he will sit, forever, and let me stroke/pet/brush him.
Maybe you can try doing something similar? – When bun is roaming, just kinda ignore, and pass by, casually, so the bun learns that your not trying to engage them,.. say some silly things to your bun, in friendly way.. stop to pet, if they come up to you, but, never follow, if they move off. – To entice to cage, rumple some plastic, etc, while setting out your daily fresh veg, so they learn to associate that sound, with good things, and return to their house area,.. while they nibble/snack, you could settle down, and give nice long, nose to tail strokes – switching it up for the brush, while they are preoccupied and very relaxed.. eventually gaining trust, through a routine that your bun can deal with.