this is probably one of the smallest dh bikes you can get i know someone 5 foot 2 that has test ridden this bike and it looked pretty comfortable but 5 foot flat may be pushing it.
the bike has a 50mm stem on it now but the raceface stem i also have is a 30mm and goes on top of the crown instead of dropping. this stem makes the bike feel a lot smaller so it may actually fit a small rider well