It's normal!

When my daughter started her period at the young age of 11, I was relieved that I had already prepared her for it, so instead of being scared or confused, she knew exactly what it was, and what she needed to do. What I didn't know or could remember from my period starting, was that it is quite normal to miss one or two months in the beginning, and for some to be lighter or heavier than others. I also didn't know that women in the same household will automatically synchronise their menstruation cycle's to start round about the same time - much to the horror of my husband...  One bit of advise I can offer is to use the many apps available that can help your daughter to plan and prepare her for her next period - and an app for me to know when to expect her PMS moods, so I can have a little bit more understanding for her outbursts. Let's face it, hormones are the bane of our existence, but if we are prepared for them, we can learn to adjust our sails and survive and control them, without them controlling us!