Two questions come to mind. 1. Can a medical exam show the difference between rape and rough consensual sex?
2. Just how big is this bathroom?
1. No
2. Small.
I have been wondering the same thing myself since day 1. Have been amazed that there has been no info. So I just put the address in a real estate website.
Total sq ft 1407 ..... Year built 1910......Assessed value 106K. 2 bedrooms 2 baths.
You can draw your own inference from this about the probable size of the bathroom.
If the girl is sexually excited, she will be naturally lubricated. Vaginal penetration on an unlubricated woman will cause detectable abrasions.