Being on her period have an acident and having to give to someone else to wash it that she doesn't know, while she would prefer to wash it, dry it and manage it herself.
Mine was a girls school with day pupils too, and the number of times we helped out day girls with hygiene supplies, spare pants sometimes, helping them get cleaned up etc, are without count. (and their mums often sent us nice treats as a thank you) That wasn't an issue
When I went to boarding school we had to do housekeeping chores for ourselves and the larger group such as laundry and cleaning the dorms and day rooms.
same. We had to wash up after every meal except lunch (but lunch at weekends too) and clean the dining room. We had to clean the dorms and bathrooms after use, but there were cleaners who did the toilets and ablutions properly.
We did have midnight feasts though, and just general silliness that the day girls didn't have.
Independence? in many ways yes, and in other ways, no. For eg most of us flew in and out of the country and had to make our way from the airport, across London, and then on the train to our town and then get to the school (bus for preference because most parents gave us taxi money)
We got pocket money - parents sent it to school and we had to request how much we wanted in any given week. So budgeting was a thing.
We had to wash our own clothes (by hand) and so on, so we learned how to do that.
But i do miss that i don't have a fantastic sibling relationship because we were at different schools and didn't really grow up together outside holidays (and there weren't many family holidays because boarding school is expensive, even with grants)