my granddaugher is 12 yrs old and has her monthly cycle. It is literally running the household, my sone is a single father, and since my granddaughter has started her cycle, my son is going crazy a week before she starts talking back, not listening, yelling at him, in general making his life horrible, he says it s her hormones, that s what his ex-wife tells him. I have talked with other mothers and none of them have had this extreme problem. I think it is an excuse to get away with what ever attitude she wants. I worry about my sone (single dad) because heart attacks have run in my family, he is under constant stress due to her problem . I have had 4 strokes, lost my 2 brothers, sister, mother and father all from heart problems. Is this a normal thing for 12 year olds when they have their cycle. I have talked to a lot of others who have had girls in my family and they never went through this! Could it all be mental or put on, or could she get help! It s really ruining my sons and granddaughters lives. He will do anything for her, but right now it s my sone I m worried about he is 50. A professional opinion would be of great help. Thank you so much.