Ive seen Ferguson once and she was OK.
Blonde, single hand backhand, forehand OK predominantly sticks to the baseline. Game not based on power but manoevering players and hitting to open court - however the match I saw her, she was getting that medicine back to her!
Her serve was adequate but not powerful so she's not like Molik.
What impressed me was that she a fair bit of intensity, and really tried to knuckle down when she made too many loose errors. She didn't just continue in a downward sprial like other juniors.
How far she goes is anyones guess. I didn't see anything that startling to say she'll automatically be top 100 etc... Top 200 would be an aim so far....