To be a little more specific:
s_s stands for steve_slave / sub. I did not even request that she be actively dominant - I simply wanted to worship a beautiful sexy young woman. To be fair, when this simply wasn't working I opted for a bit of straightforward raunch and she seemed very willing to give a, rather average, BJ (more hand than mouth), and climbed aboard and shagged me.
It just seemed that her "likes" list, including all manner of kinkier services, is completely inaccurate.