Frequent Crying. Harmful. please advise.

My mother carries out all the daily chores. When me and my siblings are around, we have good interactions with our mother. Makes jokes, speaks some old stories. She is absolutely fine in those moments. But suddenly out of the blue she starts crying with no trigger or anything. Leave her alone for few minutes, she starts crying. She grew up as a shy and very fearful person. Due to some complications during her first pregnancy, Black magic was involved. She is fearing that something bad will happen to us due to that. She believes that some deity want to take revenge. Sometimes her crying episodes are really irritating that I shout at her. I understand that It is not advisible. But I can't help losing my temper at times. It has been going on for the last couple of years. We have visited many psychiatrists and I have lost hope as I feel they are only focused on extracting money. I have a prejudice that taking harmone manipulating medications might be harmful. Please advise.