I'm having the same problem. If you always do sword call after just two attacks (of any P/K string) it gets really predictable and sometimes punishable. Generally I imagine you should simply try to vary the amount of attacks you do before the sword call, be it after just one punch or kick, or if you do a 4P string into 1K and then do sword call. Doing 5P>5K on block leaves a lot to be desired, leaves you too close to the opponent, and doesn't have any options for a third attack.
If at all possible, doing cS > 2D is likely a better option than any of her P/K strings. It's better frame advantage on block, you can jump cancel it, and you can also cancel into a fireball, YRC it, and dash back in for more pressure or a combo.