If she's a minimalist I suggest JD's 6.1 stripped roms. Try the one from 7-25-08. I have never seen a faster rom on the Vogue. For me it's very stable. I have tried almost all the 6.5 roms and a lot of the 6.1 roms but this one is the one I keep coming back too.
ftp://forum.ppcgeeks.com/Vogue/Users/Jakdillard/6.1/