It's true that you should try not to feed live once your snake has reached a size that they're eating full grown mice, but there's no way that a pinky mouse could injure your snake. They can't even really move, or see, so there's no real threat.
I've had a couple problem feeders out of my bunch... Still have one that refuses to eat out of my hand, but the second she's in her deli cup she's all over it.
My best trick is tease feeding, and it's actually the only way I feed my hatchlings (I think it establishes some kind of bond or something... and what's cooler than a snake eating out of your hand?) Hold the snake in one hand and the pink in the other. Move the snake and pink around so that the pink is pretty much always a cm or two away from the snake's mouth. Wiggle the pink around a bit so it seems like it's "alive." My babies always grab right onto the pink's head and start showin' it who's boss. Then again, if the problem is just that your snake's really shy, this probably won't work. However, it's always worked for me, so that's my suggestion...
The deli cup or tease feeding trick has worked for me, but here's a few tips I've picked up along the way:
-Try braining the pink (I think you mentioned that you've tried this, yeah?)
-Wash the pink
-Wash the pink, then dip it in chicken broth (this is if just washing it doesn't work)
-Wash the pink, then scent it with anoles (I don't know how expensive anoles are in the UK... so I don't know how feasible this option is for you)
Best of luck! I'm sure she'll eat for you soon, sometimes they just try to pretend that they're independent and difficult... a lot like most women! haha!