From my experience with online nu's. I have no idea how viable this is, but try it out:
236B+D is a god-sent. If you have a nu who will either spam the buzz-saw thing or air swords, just backdash and 236B+D. It costs a wind, but it will most likely A) Be a counter hit since they'll be in the middle of sword summons or B) Shock them into being scared of zones, no longer having the advantage. Do it on match start, if they backdash, just throw it out. If they don't backdash, predict, backdash yourself, and set up the zone. 236C+D is god for throwing people if they air-dash in from afar, and 236B+D is pretty safe on match start since the push back from D will keep them in range for 236B, even for IADs. Not so safe if they do nothing whatsoever, or try to open with moving at all, but I personally think the rewards outweight the risks on it.
I've seen MANY a nu just kinda crumple there in shock, while you can dash in. I wouldn't worry TOO much about wasting gauge because you always have the upper hand thanks to the knock-down effect of her B and C bats, and dashing in restores wind gauge.
If they're a smart Nu, they'll start trying to rush you down. However, in that situation you always ALWAYS have the upper hand. Once they rush you down, it becomes 6B counter fodder for high-damage combos, and 6A for IAD since it will most likely knock her out.