She was regent during the minority of her son Wartislaw III, Duke of Pomerania in 1219–1226.
Together, they had a son, Wartislaw III who would succeed as duke of Pomerania-Demmin, and a daughter, Elisabeth.
Ingardis ruled Pomerania-Demmin in place of young Wartislaw from Casimir's death 1219 until 1226.
At that time, Pomerania-Demmin as well as the other part duchy Pomerania-Stettin were under Danish overlordship, which diminished after the 1227 Battle of Bornhöved and was finally dismissed when Wartislaw successfully countered a Danish expedition in 1234 with his Lübeck allies.
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