She should stick with size 6. Size 7 women in UB is size 6 in junior/men (normally sz 7 women is 5.5 in Nike's). If she has wide feet, up 0.5 to size 6.5.
I'm a size 7 women in NMD/UB and sz 6 yeezy v2 fits perfect with thin socks.
Has anyone experienced misdeliveries? I had a pair of Yeezy's shipped from Belgium to Redwood City, CA. Address is correctly placed on the package, but USPS still managed to screw up and delivered it to someone else in a neighboring city in Palo Alto, CA. USPS said they'll look into it and call...