If Hannah still persists on having her business cards on a glitter stock then I could always laser cut them and have the other side plain with all her details printed. I think this may look quite nice if all the type is laid out to a high standard.. 

Also, I have another idea of having a plain piece of card and screen printing glue onto a sheet and then sprinkling dust glitter over the top, I'm not too sure if this will survive as it may sprinkle/scratch off. also there is the problem that I have only done screen printing once and I am a little rusty in this department.