Who was Kasia Lenhardt?

'[It] was her son Noah's birthday. Kasia was at home on her own. A member of her family called the police because they could not get hold of her and they were worried. 'She died a week after Jerome gave an interview in which he said their relationship was over. He said some really nasty things about Kasia. She was very upset by it.' Her death was confirmed Wednesday by model friend Sara Kulka who paid tribute in a cryptic Instagram post that said: