Monster Stun + Knockback overlap

When a monster charges and knocks you back your Stone Charm will be used but you will still get knocked back and lose your charges.

Maybe an solution could be to not lose the charges, or let the monster charge/knockback phase through you when the Stone Charm is used.

Because it makes no sense to me that you will be immobolized by the knockback and at the same time its eating your Stone Charm, as if the Knockback "has a stun inside" its modifier. What do you think?