THE Laxative

I have trouble with the frog. Generally, they use it to bait sledge B and I get punished with a rush combo. I tried to just hang back and let it get closer and then use sledge A before the rush comes. Although this would work a couple of times, the would try to follow it up with cannon/pumpkin pressure and then I get screwed more. I just wanna know if there another affective way to try to gain ground if you know they're gonna bait sledge? And, if I do j.2C the frog, will I be able to recover in time to stop her drive rush pressure?

I also do roll from 2-9 when trying the super jump. I want to know if you can buffer this with 2C. Like if you press 2C and hold 2, the roll up to 9. Every time I tried to do this it would fail. I figured that 2C was just to slow and tried to do it later in the animation but all I get is a regular jump. I just can't quite wrap my head around taking my hand of the button and then performing the motion. When I do, it feel like I lose alot of time to land the j.2C.