i was knee-jerk offended by this statement, but then i realized that i am definitely one of those women who is always buying shoes............
OP: you've gotten great advice already. i agree that you should speak to her, but from an informed perspective like those posted here. if she's up to it, definitely show her this thread! we all know how this story turns out, so maybe hearing from others will help her recognize this slippery slope she's on.