Yui has some creditable results with her victory over Jiang YJ and Saina, but I don't think she can climb up very far because of her age and height (1.52m ??)
There are many new WS talents in the circuit now, and I think speed and height gave some players advantage.
i am surprised that Yui beat Sindhu in 2 sets in their previous meeting, but here in India (1 month later), she lost in 2 sets to Sindhu.
She may be in top 30 by 2013 year end as she has the skill, but lets see if she has the luck and the necessary breakthrough this year.