DD is 10 and is more than likely going to be on her period during her school residential. She's going for 4 nights. She already uses period knickers so I will make sure to send her with enough to get her through the whole time she's there. I'm looking for recommendations for a way for her to store the used knickers discreetly. Also looking for period swimwear, preferably bikini bottoms that she can wear under her usual costume.
Anything else I need to think about? School will administer pain relief if she needs it.