No Lock On The Bathroom Door

I live with sister , her husband, and two nieces. A doctor told me to take baths to help an infection clear up. The bathroom had just been remodeled, so there was no lock on the door.

One of the kids' aunts was babysitting and opened the door. She said "Ohmygosh" and apologized. She was 16 or so at the time. I still don't know how much she saw.