I remember 16 bit saying they don't consider it a requirement that all highs hit crouch blocking opponents, and you'll notice other characters can experience this as well, though that's generally the case that highs hit crouching opponents. So don't hold our breath over this one. That said, I would very much prefer the moves to hit crouch blocking opponents, particularly S2, though I don't think she needs her F2 to. That's a very good normal regardless.
Her S1 is stubby but it also has whiffing issues such as it being possible to completely whiffing point blank after a jump in attack. Not even talking a deep jump in where you are outranged, like it can whiff at point blank. That's clearly not intended and should be fixed. It wold be nice for the move to be a little more generous hitbox wise in general.
Her S3 just seems unfinished. It's very awkward, the animation is among the worst NRS has to offer and the hurtbox inconsistently lands at different ranges which greatly affects how useful the move and 344 string are.
Arctic Barrage also has rare whiffing issues where the amplified hit will miss.