if she has no credit but the au account barlcay is the WRONG place to apply... they dont' like being peoples first and don't seem to even like being peoples credit card within a year of building credit with at least 1 other place and i think more.
But still ALWAYS RECON especially barclay and you can recon 2-3 times at different times of day... she just has to find someone that will give her the chance and sell herself on the fact that she hasn't shopped around and applied for a bunch of credit elsewhere despite knowing barlcay likes to see history, she just isn't interested in building history with cards and banks she doesn't need and all cards outside this barclay card are not needed! 
(gag, I can barely type it but a rep might like it!)