So, I figured out the Ivy thing. What you do is block her 66A (the swirly thing). The attack has two parts, a close-range one and a long range one. The long range part is the problem. It hits mid, and if it's a counter (it doesn't specify it on the movelist, but it triggers for sure while sidestepping), it transforms into a Lethal Hit, and allows for a somewhat nasty combo. So if you're at the range in which this thing can hit you, the best thing to do is block, then move forward, at least for me. B+K also works, but while it can avoid the attack, It can land Mina in a dangerous spot.
Also I think it can be punished with 1B, but I'm not 100% sure.
If you moved forward. then you're in range of the magic circle grab, which is Ivy's 2_3A+G (she can also do it in full crouch). She can cast the circle in two positions, one at mid range and another at a mid-long range, just outside of Mina's 6A, more or less. This is easy to step, but it's also easy to forget she can do it, and Ithe move's animation is very similar to other attacks of hers. Here the options are better, you can use any jump attack, sidestep, or block low.
It's difficult not to fall for it a couple of times in the heat of the match, but now at least I know the options.
Also another noteworthy thing, Ivy's AA (like, her basic A combo), can LH if the first hit whiffs. Since the first hit uses the sword and the second one the whip, it's not hard to do.
If I feel pissed off enough, I'll try to figure out Azwel's things. These two have been my hardest matchups so far. I hope this is helpful to someone. =)