Also rereading the first post,
Shatter B isn't really your best antiair. For that, you wanna use 2D.
Uhh... If you mean when she goes over you to crossup, you hold away. If she's attacking you right above? I'm fairly sure blocking the same way you were blocking before should work? 2D is once...
Practice blocking. For the next few games, do nothing but block. Don't care if you lose or anything, just focus on blocking. Then practice pushblocking. Once you have that and can perform it consistently, practice Cross Canter. And finally, when you have a bit of space, 1D is your friend.