i will not be building my girlfriend a bike. too many horror stories like this one. i'm glad she has a raleigh comfort bike.
anyone who thinks toe overlap is a problem shouldn't be riding fixed anyway. and my suggestion about waiting to turn until she's mashed the pedal on the turn side was for fixed... obviously you never have to have a problem with toe overlap with a freewheel because you can just stop pedaling when you turn.
if i'm going slow enough to need to turn the wheel that much, i am going slow enough to coordinate my turn with my crank position.