I agree with jesse_the_k. I think you've treated this subject in a realistic and sensitive manner without milking it. It's also good that there are no clear answers and this isn't something Sherlock can solve using logic and deduction. Emotions are messy and don't make sense, especially when they're your own.

I really like your description of Sherlock and the aftermath. I really like these lines in particular:

The warm water was soothing and he took a moment to just stand there before he started to carefully clean himself. He hadn’t figured out what he tried to wash away – partly due to the fact that he didn’t dare exploring that train of thought – but he compulsively felt like he had to.