Margaery takes Sonya's hand and gets back on her feet. She nods in acknowledgement of Sonya's words. She's always been light on her feet, it's part of what made her such a skilled dancer at court.

She blocks the attack coming at her shoulder and fakes a blow to Sonya's side while moving to sweep her feet out from under her.

Margaery has noticed and is trying to respond in kind. She's still relatively new at this, but she's always been clever and a quick study.