I feel like there is something I fundamentally do not understand about this character. This is supposed to be high pressure, once she's in she stays in and kills you, but in this game blocking low blocks everything except an overhead, and hers is really slow. Then if you do get pressure going, all they do is block it then d1 and it's over. I don't understand what makes her so powerful. I see that she is but I don't know how to make it work for me. Like, I literally do not get it, what am I supposed to be doing? (pardon, salty and frustrated at the moment).
So a few things to understand here:
1) Conditioning is key. People may still be hit by the OH if they aren't looking for it -- but to do that you need to condition them with lots of blocking low first.
2) Along those lines, throws are incredibly strong in this game. If people are just blocking your pressure, throw them instead next time.
3) Continuing that idea, what makes the cancels dangerous is that you don't know what she's going to follow up with. So I can do f31 on block and cancel it with a throw after.. If the next time you expect the throw, I can follow the cancel with the full f31 into combo, or f314, or whatever.
4) LIkewise with plus frames.. If you connect with b34 on block, they have to guess what you're going to do to follow up.
5) When you need to encourage someone to open up, staggers and shimmys have their place. Basically, the goal is to make someone think they have a space to stop blocking and move or attack, when you're already about to unleash a followup that hits them. Play around with her strings to see what you can use for this.
So for example, once you condition them with b34 and b324 (the strings that start with lows), you might do b1, then walk back slightly, to leave a tiny window, then attack. I'm not sure if that's the best string for it since I haven't completely labbed it yet, but you get the idea. They think they can move, and you interrupt it because you started your next attack first.
You opponent cannot be blocking if they are moving, so making them think it's ok to move can give you the opening you need. Find spaces where a slight walk back, etc. can convince your opponent to do something and stop blocking. Walk forward like you're about to throw them and then attack before they do, etc. You can also use strings with pushback on block to put them at a tricky distance where they try to do something afterward and you punish them for it.
Bottom line:
All of these things are more effective when you are mixing them up. If you're doing the same thing every time, your opponent is going to catch on to it. Watch how good players open people up and repeat.