The widow however had to witness the killing of her son, vainly awaiting the support of Emperor Frederick II, during the Mongol invasion of Poland at the Battle of Legnica (Wahlstatt) in 1241.
Namun janda itu harus menyaksikan pembunuhan putranya, dengan sia-sia menunggu dukungan dari Kaisar Friedrich II, selama Invasi Mongol ke Polandia di Pertempuran Legnica (Wahlstatt) pada tahun 1241.