Welcome aboard sir!
TW is a short bike in the stock configuration. The seat height is 31.1", however, at 5' 2" she'll feel like she's riding a KTM enduro. Other members can probably speak about lowering kits better than I as I have the opposite problem (6'5").
$2400 for a 2009 with 750 is a great deal in my opinion if the bike is clean and a good runner. Go buy it, or it'll be gone!!!