Did you enable "Collision Shapes" in iClone for your lady?
76% of original size (was 664x19) - Click to enlarge
If yes, did you try to actually scale it and adjust to match the shape of her thighs and calfs?
Well, you would not be able to match it exactly (not that anything wrong with her thighs
:D), but the collision shapes are way too straightforward.
So play with shapes until there is no more poking through.
You may want to vote for a better collision system here:
https://www.reallusion.com/FeedBackTracker/Issue/Improve-Character-Collision-Shapes