Hi there, I own (and love) my orange diva 5, but I am 5"1 and into my freeriding (well, before I got pregnant that is).  It should also be noted that the Diva is made up in a more burly spec than most women would go for.  For example, it has a very long fork, riser bars, and a short stem/top tube that gives it the appearence of being smaller.  I actually stripped the test bike when I had it, and put all my own components on.  I think standover is really important, and you really need at least 2-3 inches clear to be safe and comfortable.  Depending on your riding, would also recomend a Julliana, they come in various sizes, but I went for the Orange frame as I needed something stronger after already cracking the frame on one Julliana! Best of luck