I charge while guarding, so if an opponent backs me into a corner, or I'm just guarding, I tap guard quickly and start holding A/B, although as it's been stated before empty B charges aren't very good (easily steppable, predictable) outside of combos. At least C1A and C2A are some tools she has for breaking pressure; kills step, close range, hits mid, safe on block...but C3A is so goddamned horrible outside of combos (second hit always comes out, easily GI/JGed) that I want to just drop my A charge if it's been too long.
I use the stick, holding G and A, guarding and storing my charge. I need to step and move around, so I let go of G and move around. Against a safe opponent, I can't get them to whiff, so C3A is worthless to me. I quickly tap-hold G, immediately let go of A, immediately let go of G. Instead of returning to a neutral state, the C3A comes out. I think it's from a change in the patch notes that talked about how they "altered move buffering" from some state or another. I thought they'd fixed the problem; they might have made it worse. =(
