Hullo @elsiekjay,yes i have heard a broken heart syndrome.
A year back when my mother in law was diagonised with cancer and since my husband is her only son she had to stay with us.she has never been a mother to me and neither has she ever liked me.it was hard for me to get along with this situation and get myself strong to take care of her.
Up to now she is still staying with me and on medication.i ask God to give me strength everyday to take care of her and accept her.