Hi,
After 4 children I feel like I have a lot of experience. Some have been worse than others. I think it's just a time you need to be very straightforward. it's normal. We all do it. But it's something you need to do in private 9not because anyone's embarrassed - it's just what you do. Maybe ask her to wash her hands after (I know that she's doing through a nappy. If it was skin to skin I would suggest she washes her hands before and after to stop infection) Check out the itchy theory with her. It doesn't last forever (or maybe it does, but they learn some etiquette)