Ruby is a Dominatrix and can be hired for a fee to dominate clients.  Her name bears a striking similarity to the computer programming language Ruby on Rails, which has built her a major following in the tech community. [✔]
Ruby has a slave named Zandor. 
Her main sexual activities are bondage, strap-on play, sadism (whipping, caning, spanking, clamps, etc), power exchange (tasks, behavior modification, slave training, punishment, etc) and orgasm control (tease & denial, chastity, cuckolding, edging, etc) and mental control (hypnosis, mind fucks, behavior modification, humiliation, fear play, etc.).