I think I worded that wrong. It's not the fact that she's a sexual person that bothers me. It's the fact they have to make her continually sexual toward Sherlock.

I'm very much a fan of the original story, and so it just disappoints me that her character is continually made to fling herself at him. The two of them barely spoke two sentences to each other in the original, and though Holmes admired and had a crush on her, it was more for her mind and her talents as a singer.

It makes me sad that a woman can't be strong and independent and have her own life (Adler was married with Holmes being a witness in the original) without being turned into a love interest for the hero. I think it takes away from both of the characters and the story.