Because, you know, we like to make everything about us. And also are everywhere, lurking and ready to make everything about Sherlock.
I've pinned the few I've found to my Sherlock board over at Pinterest. Right now they're at the top of the page right after the notice that that page will contain spoilers for series three come January 01. I do wish I could find a collection someone has put together of the best Sherlock/justgirlythings crossovers. But in the meantime, if you're at all drawn to Shderlock and/or subverting gender expectations, do check it out.