Odd experience at my girlfriends house

So my girlfriend of two years went away with her family for vacation and they let me visit their home while away to take care of their pets. While I was there I went and opened a drawer in my girlfriend’s room out of curiosity, because a while ago she had yelled at me not to open it. After opening the drawer it had 7 small vials of hair and two teeth in a tiny bag. I was shocked at the discovery and it was disturbing, 3 of the vials had small name tags one for her mother, step father and one of her childhood friends who goes to the same school as us. I don’t even know what to do with this information because I wouldn’t want to tell anyone that I know but I also wanted to see what others might think it means or if there’s any symbolism.