From the MaxPreps' stats, Richey looks like a good high school player -- 5-10 forward who rebounds well, handles well, shoots a little. But of course program heights often have little relation to reality, so my first guess would be 5-9.
In short, so to speak, Richey needs to be able to play the wing at the Pac-12 level and add a consistent three-point shot to her game to help make the adjustment.
But you never know -- and if she comes with a good attitude, practices hard and makes her teammates better, then she's a plus.