I watched that several years ago. They made her out to be a pretty well rounded, smart and likable (although diabolical) character. When the season ended you really weren't sure if she really cared for Sherlock or if he would eventually be one of her victims. I don't know if she reappeared in subsequent seasons.
_________________________
Making grown men cry . . . and loving every minute of it.

Main website: www.mistressayn.com
Content site: www.aynrules.com
Follow Me on Twitter - @MistressAyn