you'll still want to enforce that 50/50 with her strings like 21 or 2 ex roll or f12b4 or f12 ex roll, it isn't as deadly for a bar obviously, but putting the fear of the overhead in your opponents mind whether it gets you a combo or not. At lower health the mix up becomes more and more deadly when your opponent could die from an ex roll mix up. Ive found that if i use ex roll, it puts me in a great position to zone and build up that meter you just spent since you're full screen if you don't spend the second bar.